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AEDSammy Sosa & Mark McGwire Signed Baseball Pair - Home Run Sluggers
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About Auction
LiveJul 20, 2026
Harrington’s is proud to present a Premier Baseball Memorabilia Auction on Monday, July 20, 2026 at 11:00 AM EST (Online Only), featuring an exceptional lineup of investment-grade collectibles tied to baseball’s most iconic figures. Highlights include game-used and signed bats, autographed baseballs, rare vintage baseball cards, and limited-edition signed photos and memorabilia from legends including Mickey Mantle, Babe Ruth, Joe DiMaggio, Willie Mays, Jackie Robinson, Hank Aaron, Sandy Koufax, Ken Griffey Jr, and many more. Harrington's Auctions nicole.c@harringtonsauctions.com
View Full Catalog (281)
- Lot Description
Sammy Sosa & Mark McGwire Signed Baseball Pair
Pair of signed baseballs featuring sluggers Sammy Sosa and Mark McGwire, two of the defining stars of baseball’s historic home run era of the late 1990s. Their celebrated 1998 home run chase remains one of the most memorable and collectible storylines in modern baseball history, helping reignite widespread fan interest in the sport.
The Sammy Sosa baseball is signed in blue ink on an Official National League baseball and is accompanied by Philly Collectibles authentication. The Mark McGwire example is signed on an Official American League baseball and includes Madison Sports authentication.
McGwire and Sosa combined for an astonishing 136 home runs during the 1998 season while chasing Roger Maris’ longstanding single-season home run record. Their rivalry and historic offensive production cemented both players among the most recognizable figures of the era and continue to generate strong nostalgic collector appeal.
Authentication & Provenance
The Sammy Sosa baseball is accompanied by a Philly Collectibles Certificate of Authenticity. The Mark McGwire baseball is accompanied by a Madison Sports Certificate of Authenticity.
Condition
The Sammy Sosa baseball presents well overall with light natural toning, a strong signature, and minor handling/storage wear. The Mark McGwire baseball exhibits more noticeable toning and age-related discoloration throughout consistent with long-term storage and display. Signatures remain visible and display well overall. Please refer to photographs for complete condition details.
Details
Players: Sammy Sosa & Mark McGwire
Item Type: Pair of Signed Baseballs
Baseball Types: Official National League Baseball; Official American League Baseball
Authentication: Philly Collectibles COA (Sammy Sosa); Madison Sports COA (Mark McGwire)
Display Cases: Included - Shipping Info
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1. Shipping is calculated based on location, weight and size of item (s). Insurance is included and is strongly recommended, if declined Harrington's Auctions will not be held liable for any damage that occurs once it leaves our facility.
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6. All items will be declared at their full and final sale value for customs purposes. We do not alter or reduce declared values. By Placing a bid, you acknowledge responsibility for any applicable taxes, duties or import fees.
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