Chicago Cubs Slugger & 600-Home Run Club Member: Sammy Sosa Autographed Custom Dark Blue Baseball Jersey with "Slammin Sammy" Inscription
Celebrate one of the most explosive power hitters in Major League Baseball history with this official Sammy Sosa Autographed Chicago Cubs Custom Dark Blue Baseball Jersey. Hand-signed in sharp, permanent marker across the custom-stitched back number by 7x All-Star, 1998 NL MVP, 6x Silver Slugger, and 600-Home Run Club icon Sammy Sosa, this collectible jersey features his iconic nickname inscription: "Slammin Sammy".
A central figure in baseball's unforgettable home run chases, Sosa captivated sports fans worldwide by becoming the only player in MLB history to hit 60 or more home runs in three separate seasons. Featuring custom sewn-in nameplate and numbers on classic dark blue fabric, this custom non-branded jersey is designed specifically as a top-tier display piece (size XL). Every signature and inscription was physically witnessed in person and certified 100% authentic by Beckett Authentication Services (BAS Witnessed).
Ironclad Beckett BAS Witness Authentication
To guarantee 100% indisputable lifetime market legitimacy, this hand-signed custom jersey was authenticated under the direct, in-person supervision of a Beckett Authentication Services (BAS) representative.
- Authentication Firm: Beckett Authentication Services (BAS)
- Authentication Type: Serial-Numbered Tamper-Proof Witness Security Hologram
- Athlete / Personality: Sammy Sosa (1998 NL MVP / 7x All-Star / 600+ Career Home Runs)
- Inscription: "Slammin Sammy"
- Team / Theme: Chicago Cubs / MLB
- Item Type: Custom Stitched Dark Blue Baseball Jersey (Size XL)
- Signature Ink: Bold Permanent Marker Signature
- Authentication Deliverables: Serial-numbered tamper-evident BAS Witness hologram affixed directly to the jersey and online database verification.
How to Verify Your Security Hologram
Your authentic Sammy Sosa autographed jersey includes digital verification backed by the official Beckett Authentication Database.
- Locate Security Serial Code: Find the unique alphanumeric serial number printed on the tamper-proof Beckett BAS Witness hologram sticker affixed to the jersey.
- Navigate to Verification Portal: Visit the official Beckett Authentication lookup portal (beckett-authentication.com/verify-certificate).
- Input Certification Code: Type the unique serial number into the online verification database.
- Review Verified Details: Instantly confirm the matching player record, item description, signature event details, and official digital record.
Risk-Free Shopping & Premium Protective Shipping
- Secure Protective Packaging: Your autographed Sammy Sosa jersey is carefully folded, garment-bagged, and boxed to ensure the signature, inscription, and fabric remain immaculate during transit. Standard ground shipping is completely free.
- Free 30-Day Returns: Shop with total confidence. If you are not completely satisfied with the item's condition, signature clarity, or overall presentation upon arrival, return it within 30 days for a full refund—we cover all return shipping costs.
Product Specifications & Details
- Player: Sammy Sosa (#21)
- Team: Chicago Cubs
- Inscription: "Slammin Sammy"
- Jersey Style: Custom Stitched Dark Blue Baseball Jersey (Size XL)
- Authentication: Beckett BAS Witnessed Tamper-Proof Hologram
- Condition: Brand-new / Mint collector condition, ready for display or framing
