1. Mantle Masterpiece—$12.6 Million for Baseball Card Found in U.S. Attic

📰 📽️ 📅 2022 Report: In the USA, a 1952 Topps Mickey Mantle baseball card, found in an attic in the 1980s, sold for a record $12.6 million at auction. The pristine collector's item is considered one of the greatest sports card finds in history.

█ Story, video, and image: 🔗 MLB

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▌Related: Attic • Sports • Collectible

2. Card-Box Bonanza—$11 Million for One-of-One Baseball Treasure

📰 📅 2026 Report: In Boca Raton, Florida, USA, an unidentified collector bought two hobby boxes from a local card shop and opened them at home, pulling a one-of-one Shohei Ohtani dual-patch autographed redemption card. The box price was not disclosed. The card sold privately the same day for $11 million, becoming the third-most-expensive sports card publicly known.

█ Story and images: 🔗 New York Times

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3. Tobacco Pack Treasure—$5 Million for Card Found Framed in Storage

📰 📅 2026 Report: In the United States, a 1909 T206 Honus Wagner baseball card—pulled from a Sweet Caporal tobacco pack and preserved by one family for 116 years—sold for $5.124 million (USD) at auction. Originally purchased for pennies, the ultra-rare card was reportedly found framed in warehouse storage among items inherited from the family’s great-grandfather. The sale ranks among the most valuable sports collectibles ever recorded.

█ Story and images: 🔗 ESPN

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4. Card Treasure—$3 Million for Mint-Condition 1910 Baseball Cards Found in Family Attic

📽️ 📅 2012 Report: In Ohio, USA, a monumental discovery was made in a dusty attic when a family unearthed a box of 700 pristine 1910 baseball cards, valued at the time at up to $3 million. Named the 'Black Swamp Find,' these cards were celebrated for their rare mint condition. Full story in a seven-minute video.

█ Video: 🔗 Heritage Auctions / YouTube

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5. Hockey Card Jackpot—$2.5 Million for Unopened 1979 Case Found in Basement

📰 📽️ 📅 2024 Report: A family in Saskatchewan, Canada, sold a rare unopened 1979 hockey card case for $2.5 million (USD) after a prior $3.7 million sale fell through. Found in a basement, the case may contain 25-27 Wayne Gretzky rookie cards—potentially worth over $200,000 each.

█ Story, images, and video: 🔗 CBC

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6. Pack Pull Marvel—$2.16 Million for 1-of-1 Baseball Card Found in Shop

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8. Briefcase Bonanza—$1.8 Million for Rare Signed Rookie Card Discovery

📰 📅 2026 Report: In the U.S., a family member reportedly found a signed 1948 Jackie Robinson rookie card inside a briefcase 🔗 belonging to a late cousin. One of only five authenticated signed examples, the card sold for $1.8 million at auction.

█ Auction link and images: 🔗 Fanatics

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9. Chamberlain Gem—$1.7 Million for Forgotten Rookie Card Kept in Cabinet 60 Years

📰 📅 2024 Report: In Minnesota, USA, a 1961 Wilt Chamberlain rookie card forgotten in a grocery store cabinet for 60 years sold privately for $1.7 million. Discovered by the original owner’s family, the card was graded SGC 10, making it the only known example in that pristine grade. Its rarity and condition set a new record.

█ Story, links, and images: 🔗 Sports Collectors Daily

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10. Sports Card Stash—$1 Million for 100-Year-Old Cards Found in Attic Trash Bag

📰 📅 2016 Report: In the USA, seven exceptionally rare T206 Ty Cobb baseball cards, known as 'The Lucky 7 Find,' were discovered in a torn paper bag in an attic—originally mistaken for trash. These cards, featuring Ty Cobb with a unique 'Ty Cobb Tobacco' back, represent a significant find due to their scarcity and their connection to early 20th-century baseball history. Estimated at $1 million, their immense value is underscored by their rarity and Ty Cobb's historical significance in baseball lore.

█ Story and images: 🔗 PSA

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11. Baseball Legends—$1 Million for Rare 1871 Cards and Letter Found in Family Album

📰 📽️ 📅 2014 Report: In New York, USA, rare 1871 baseball cards and a historic letter found in a family album were valued at over $1 million. Their uniqueness, along with ties to early baseball legends such as Harry Wright and A.G. Spalding, significantly contributed to their value. These items are considered extraordinary finds.

█ Story, video, and images: 🔗 PBS Antiques Roadshow

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Page Notes

Last updated: July 31, 2026

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