{"product_id":"bill-mazeroski-autographed-pittsburgh-custom-yellow-baseball-jersey-bas","title":"Bill Mazeroski Signed Pittsburgh Pirates Yellow Baseball Jersey BAS Authenticated","description":"\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAdd a signed piece from Pittsburgh's most irreplaceable baseball legend to your collection with this \u003cstrong\u003eBill Mazeroski Autographed Pittsburgh Pirates Custom Yellow Baseball Jersey\u003c\/strong\u003e. On February 20, 2026, Bill Mazeroski passed away at the age of 89 — the Hall of Fame second baseman whose signature on a Pirates jersey now represents the permanent and complete inventory of what he left behind in the memorabilia market. The yellow jersey carries a specific distinction from every other Mazeroski signed piece: it is the colorway that connects his autograph to the full seventeen-year arc of a career spent entirely in Pittsburgh — from the 1960 championship that made him immortal to the 1971 championship that confirmed him as the only Pirate to have worn both rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis \u003cstrong\u003ePittsburgh Pirates custom yellow baseball jersey\u003c\/strong\u003e has been \u003cstrong\u003ehand-signed by Bill Mazeroski\u003c\/strong\u003e with a bold, clean autograph. Authentication is provided by \u003cstrong\u003eBeckett Authentication Services (BAS)\u003c\/strong\u003e, featuring their \u003cstrong\u003etamper-proof BAS hologram\u003c\/strong\u003e, verifiable directly at Beckett's official website.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eProduct Highlights\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eHand-signed by \u003cstrong\u003eBill Mazeroski\u003c\/strong\u003e — Baseball Hall of Famer (2001), Pittsburgh Pirates legend\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003ePittsburgh Pirates custom yellow alternate baseball jersey\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eBAS authenticated\u003c\/strong\u003e with tamper-proof Beckett hologram\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eThe only member of both the 1960 and 1971 World Series championship teams\u003c\/strong\u003e alongside Roberto Clemente — the only Pirate to hold two championship rings from two different eras \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/en.wikipedia.org\/wiki\/Bill_Mazeroski\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eWikipedia\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eEight Gold Glove Awards\u003c\/strong\u003e — the greatest defensive second baseman in the history of the game \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/www.espn.com\/mlb\/story\/_\/id\/47994306\/mazeroski-known-1960-world-series-walk-homer-dies-89\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eESPN\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e17 seasons, all with the Pittsburgh Pirates\u003c\/strong\u003e — never played a game in another uniform \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/sports.yahoo.com\/mlb\/breaking-news\/article\/bill-mazeroski-pirates-hall-of-famer-and-1960-world-series-hero-dies-at-89-135046357.html\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eYahoo Sports\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSupply permanently fixed\u003c\/strong\u003e — Bill Mazeroski passed away February 20, 2026, at age 89\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eBacked by our \u003cstrong\u003eLifetime Authenticity Guarantee\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eThe Yellow Jersey — The Colorway of the Complete Career\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Pittsburgh Pirates' gray road jersey connects to the franchise's classic identity — the uniform Mazeroski wore into opposing ballparks across seventeen seasons. The yellow alternate connects to something different: the full arc of a Pittsburgh career that outlasted teammates, managers, front office regimes, and two complete championship cycles. The Pirates' yellow is the colorway of the franchise's most celebrated visual era — the gold and black of a team that dominated the National League across the late 1960s and into the 1970s, produced three consecutive division titles from 1970 to 1972, and won the 1971 World Series with a roster that included the last surviving member of the 1960 champions. That survivor was Mazeroski. The yellow jersey signed by him is the colorway that honors the complete Pittsburgh story — not a single moment, not a single season, but seventeen years of showing up for one city in one uniform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eThe Only Pirate on Both Championship Teams\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 1960 World Series and the 1971 World Series are the two greatest moments in Pittsburgh Pirates franchise history — separated by eleven years, two entirely different rosters, and a franchise transformation from the Clemente-era teams of the 1960s into the \"We Are Family\" dynasty of the 1970s. Mazeroski and Roberto Clemente were the only members of the 1960 champions who were on the team when they picked up another title in 1971, beating the favored Baltimore Orioles in seven games. \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/en.wikipedia.org\/wiki\/Bill_Mazeroski\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eWikipedia\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e By 1971, Mazeroski was 35 years old and a veteran reserve — a player whose starting role had been passed to younger hands but whose presence in the clubhouse and on the roster connected the franchise's two championship eras in a single body. He had been there for the first one, the most dramatic single swing in baseball history, and he was there for the second, watching Clemente deliver his own legendary World Series performance against those same Orioles. The yellow jersey bearing Mazeroski's signature is the only signed piece in the Pittsburgh market that connects both championship eras through the autograph of the one player who was present for both.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eSeventeen Seasons, One Franchise, One City\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOver seventeen seasons with the Pittsburgh Pirates, Mazeroski compiled 2,016 hits, 294 doubles, 138 home runs, and 853 RBI — never playing a single game in another uniform. \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/sports.yahoo.com\/mlb\/breaking-news\/article\/bill-mazeroski-pirates-hall-of-famer-and-1960-world-series-hero-dies-at-89-135046357.html\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eYahoo Sports\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e The loyalty was not circumstantial. When the Pirates retired his number 9 in 1987, they honored a player who had been offered other opportunities and had chosen Pittsburgh each time — a coal miner's son from West Virginia who arrived at Forbes Field as a 20-year-old shortstop converted to second base and left seventeen years later as the greatest defensive player the position had ever seen. His humility, work ethic, and dedication made him a role model to every generation of Pirates player who followed him — and after his retirement he returned as a coach and infield instructor, remaining woven into the fabric of the franchise across five more decades. \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/northpennnow.com\/news\/2026\/feb\/24\/bill-mazeroski-legendary-pirates-hall-of-famer-with-famous-1960-world-series-home-run-dies-at-89\/\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eNorthPennNow\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e The yellow jersey is the colorway of that complete commitment — the Pittsburgh alternate, signed by the player who never needed to be anywhere else.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eThe Legacy and the Supply\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eMazeroski died in Lansdale, Pennsylvania, on February 20, 2026, at the age of 89. \u003cspan data-state=\"closed\" class=\"inline-flex\"\u003e\u003ca class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" href=\"https:\/\/en.wikipedia.org\/wiki\/Bill_Mazeroski\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003eWikipedia\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"transition-all opacity-[0%] h-[17px] absolute right-[0.5px] inline rounded-r-full flex items-center px-1.5 bg-gradient-to-r from-accent-900\/0 via-accent-900\/100 via-30% to-accent-900\/100 group-hover\/tag:opacity-[100%]\"\u003e\u003csvg class=\"transition-all group-hover\/tag:ease-out duration-[500ms] ease-in text-accent-100 group-hover\/tag:scale-[100%] scale-[80%] group-hover\/tag:opacity-[100%] opacity-[0%] -mr-[2px]\" viewbox=\"0 0 256 256\" fill=\"currentColor\" height=\"14\" width=\"14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M200,64V168a8,8,0,0,1-16,0V83.31L69.66,197.66a8,8,0,0,1-11.32-11.32L172.69,72H88a8,8,0,0,1,0-16H192A8,8,0,0,1,200,64Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e The signed yellow jersey is among the final physical connections available to a career that produced the only walk-off Game 7 home run in World Series history, two championship rings across two different eras, eight Gold Glove Awards, and a Hall of Fame plaque earned on the merits of a defensive record that redefined the standard for what it meant to play second base in the major leagues. Every Mazeroski signed piece in existence was signed during his lifetime. None will be added. The yellow jersey bearing his signature — the Pittsburgh alternate colorway, the gold of a franchise he served completely — is a piece whose value as both a collectible and a document of baseball history is permanently established.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eAuthenticity\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis jersey is certified by \u003cstrong\u003eBeckett Authentication Services (BAS)\u003c\/strong\u003e. The tamper-proof BAS hologram is affixed directly to the jersey and verifiable at Beckett's official website — one of the most trusted authentication standards in the sports memorabilia market.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eSpecifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cdiv class=\"overflow-x-auto w-full px-2 mb-6\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\" scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-border-300\/60 py-2 pr-4 align-top font-bold\" scope=\"col\"\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003ePlayer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eBill Mazeroski\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eTeam\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003ePittsburgh Pirates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eItem Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eAutographed Custom Baseball Jersey\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eJersey Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eYellow (Alternate Colorway)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eAuthentication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eBeckett BAS Hologram\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eTamper-proof Beckett hologram\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eHall of Fame\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eBaseball Hall of Fame — Class of 2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-border-300\/30 py-2 pr-4 align-top\"\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eAuthenticity Guarantee\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEvery signed piece at GameDay Sports Memorabilia is backed by our \u003cstrong\u003eLifetime Authenticity Guarantee\u003c\/strong\u003e. If your item is ever determined to be inauthentic, we will replace or refund it — no questions asked.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":52457612902699,"sku":"SC-BASEBALLJ16","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/6124\/5995\/files\/Bill-Mazeroski-Autographed-Pittsburgh-Custom-Yellow-Baseball-Jersey-BAS_313492__06034.1744559918.1280.1280_9a83edc7-a946-4390-a13a-848338592a29.jpg?v=1775428900","url":"https:\/\/gamedaysportsmemorabilia.com\/products\/bill-mazeroski-autographed-pittsburgh-custom-yellow-baseball-jersey-bas","provider":"Gameday Sports \u0026 Memorabilia","version":"1.0","type":"link"}