{"product_id":"seattle-mariners-ken-griffey-jr-autographed-mitchell-ness-authentic-royal-blue-bp-jersey-size-48-bas-witnessed","title":"Seattle Mariners Ken Griffey Jr. Autographed Mitchell \u0026 Ness Authentic Royal Blue BP Jersey Size 48 - BAS Witnessed","description":"\u003carticle class=\"product-description\"\u003e\n\u003cheader class=\"product-description__header\"\u003e\u003c\/header\u003e\n\u003csection class=\"product-description__story\"\u003e\n\u003ch2\u003eSeattle Mariners Icon \u0026amp; Baseball Hall of Famer: Ken Griffey Jr. Autographed Official Mitchell \u0026amp; Ness Authentic Royal Blue Batting Practice Jersey\u003c\/h2\u003e\n\u003cp\u003eCelebrate the peak era of \"The Kid\" with this official \u003cstrong\u003eKen Griffey Jr. Autographed Seattle Mariners Mitchell \u0026amp; Ness Authentic Royal Blue Batting Practice Jersey\u003c\/strong\u003e. Hand-signed in sharp, permanent high-contrast marker by 13x All-Star, 10x Gold Glove Award winner, 1997 American League MVP, and National Baseball Hall of Famer \u003cstrong\u003eKen Griffey Jr. (#24)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eUnlike standard custom replica jerseys, this premium collectible is an \u003cstrong\u003eOfficial Mitchell \u0026amp; Ness Authentic Apparel Piece (Men's Size 48)\u003c\/strong\u003e, featuring authentic woven Cooperstown Collection team tagging, authentic tackle-twill stitching, breathable mesh batting practice fabric, and exact historic team tailoring. As the face of baseball during the 1990s, Griffey revolutionized the sport in Seattle with his effortless swing, legendary center-field catches, and unforgettable style. This premium licensed jersey represents the absolute peak of sports memorabilia display pieces, ideal for high-end shadowbox framing, executive suites, fan caves, or investment-grade MLB collections.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-description__auth-details\"\u003e\n\u003ch2\u003eIronclad Beckett BAS Witnessed Authentication Validation\u003c\/h2\u003e\n\u003cp\u003eTo guarantee 100% indisputable lifetime market legitimacy, this hand-signed authentic jersey was autographed in the physical presence of a Beckett representative and certified under the prestigious \u003cstrong\u003eBeckett BAS Witnessed Authentication Program\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentication Firm:\u003c\/strong\u003e Beckett Authentication Services (BAS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentication Type:\u003c\/strong\u003e BAS Witnessed Certification (In-person signing observed directly by a Beckett representative)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAthlete \/ Personality:\u003c\/strong\u003e Ken Griffey Jr. (Seattle Mariners \/ National Baseball Hall of Fame Class of 2016)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeam Color Style:\u003c\/strong\u003e Seattle Mariners (Royal Blue Batting Practice Mesh with Yellow \u0026amp; White Accents)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApparel Branding:\u003c\/strong\u003e Official Mitchell \u0026amp; Ness Authentic Cooperstown Collection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizing:\u003c\/strong\u003e Men's Size 48 (Authentic On-Field Specification)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignature Ink:\u003c\/strong\u003e High-Contrast Permanent Marker Signature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentication Deliverables:\u003c\/strong\u003e Serial-numbered tamper-evident Beckett BAS Witness security hologram sticker affixed directly to the jersey with direct online database lookup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-description__verification\"\u003e\n\u003cdetails class=\"auth-verify\"\u003e\n\u003csummary class=\"auth-verify__summary\"\u003e\u003cspan class=\"auth-verify__chevron\" aria-hidden=\"true\"\u003e▸\u003c\/span\u003e \u003cspan class=\"auth-verify__title\"\u003eHow to Verify Your Witnessed Security Hologram\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"auth-verify__body\"\u003e\n\u003cp class=\"auth-verify__lead\"\u003eYour genuine Ken Griffey Jr. autographed authentic jersey includes digital verification powered by the official \u003cstrong\u003eBeckett Authentication Database\u003c\/strong\u003e.\u003c\/p\u003e\n\u003col class=\"auth-verify__steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocate Security Serial Code:\u003c\/strong\u003e Find the unique alphanumeric serial number printed on your Beckett BAS Witness tamper-proof security hologram affixed directly to the jersey.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNavigate to Verification Portal:\u003c\/strong\u003e Visit the official Beckett verification portal (beckett-authentication.com\/verify-certificate).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Certification Code:\u003c\/strong\u003e Type the unique serial number into the online search tool.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReview Verified Details:\u003c\/strong\u003e Instantly confirm the matching player record, witnessed signing details, item description, and official digital authentication status.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"auth-verify__footer\"\u003eFor additional details regarding jersey shadowbox framing options, display hangers, or insured shipping logistics, please reach out to our team at \u003ca href=\"mailto:orders@gamedaysportsmemorabilia.com\"\u003eorders@gamedaysportsmemorabilia.com\u003c\/a\u003e or call 844-747-1658. We protect every investment with our \u003cstrong\u003eLifetime Authenticity Guarantee\u003c\/strong\u003e: if this item ever fails verification by Beckett BAS, we will provide a 100% full refund of your purchase price.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-description__shipping-policy\"\u003e\n\u003ch2\u003eRisk-Free Shopping \u0026amp; Premium Protective Shipping\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Protective Packaging:\u003c\/strong\u003e Your autographed authentic Mitchell \u0026amp; Ness jersey is neatly folded inside a protective poly sleeve and shipped inside a rigid corrugated shipping box to ensure it arrives pristine, clean, and ready for display or shadowbox framing. Standard ground shipping is completely free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree 30-Day Returns:\u003c\/strong\u003e Shop with total confidence. If you are not completely satisfied with the jersey's condition, signature clarity, or overall presentation upon arrival, return it within 30 days for a full refund—we cover all return shipping costs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-description__specs\"\u003e\n\u003ch2\u003eProduct Specifications \u0026amp; Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlayer:\u003c\/strong\u003e Ken Griffey Jr. (Seattle Mariners Outfielder \/ #24)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApparel Manufacturer:\u003c\/strong\u003e Mitchell \u0026amp; Ness (Authentic Cooperstown Collection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle \/ Color:\u003c\/strong\u003e Royal Blue Authentic Mesh Batting Practice Jersey (Yellow \u0026amp; White Accents)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizing:\u003c\/strong\u003e Men's Size 48\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentication:\u003c\/strong\u003e Beckett BAS Witnessed Tamper-Proof Security Hologram\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand-new \/ Mint collector condition, ready for display presentation or shadowbox framing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/article\u003e","brand":"Gameday Sports Memorabilia","offers":[{"title":"Default Title","offer_id":55012068491563,"sku":"267476","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/6124\/5995\/files\/STOCK_8_13_26_3162__70202.webp?v=1786669006","url":"https:\/\/gamedaysportsmemorabilia.com\/products\/seattle-mariners-ken-griffey-jr-autographed-mitchell-ness-authentic-royal-blue-bp-jersey-size-48-bas-witnessed","provider":"Gameday Sports \u0026 Memorabilia","version":"1.0","type":"link"}