Sold at Auction: Error Lot - 15 Different 1989 Topps Baseball Wrong Back Cards

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Sports Card Errors: Collectors' Gold - GoCollect

ERROR LOT - 10 Different 1988 Topps Baseball Wrong Back Errors - Graig Nettles + More

Charitybuzz: 1989 Upper Deck Rookie #1 Ken Griffey Jr Signed Rookie Card

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The most error-filled card back ever

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1869-2022: The Most Valuable Baseball Card Sold From Every Year (Almost) - Love of the Game Auctions

Wrong Back Error - Roger Clemens 1987 Topps - Tough To Find

The Topps Archives: What In The Wide World Of Sports Is Going On Here?

18 - 1970 Topps and Kelloggs Baseball Cards of HOFs and Stars - Matthew Bullock Auctioneers

1987 Topps Baseball Checklist, Set Info, Key Cards, Boxes, Review