The British Coin That Sold for $210K, and 5 More That Went for Serious Money

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Some of the rarest coins have sold for millions at major auctions, and according to Heritage Auctions, its August American Numismatic Association events alone brought in more than $68 million.
Even smaller sales can fetch impressive sums when collectors are chasing something special, as research from SD Bullion found. The study looked at eBay sales from March through May 2025 to see which gold and silver coins sold for in that period.
From British showpieces to American bullion tubes, these six coins all broke the $40,000 mark.
Great Engravers: Waterloo
- Last sold price: $210,077
The 1-kilogram Royal Mint gold coin tops the list, having sold on May 1 for more than three times the amount the next-highest coin went for. Limited edition and highly collectible, it celebrates the Battle of Waterloo with detailed engravings.
2025 American Gold Buffalo 1 Ounce $50 — 20-Coin Mint Tube
- Last sold price: $69,613
Introduced in 2006, the Gold Buffalo was the first-ever U.S. Mint coin struck in pure 24-karat gold, and a sealed mint tube of these coins recently sold for nearly $70,000.
American Gold Buffalo 1 Ounce $50 — Mixed Dates, 20-Coin Mint Tube
- Last sold price: $68,308
Even though this tube of Gold Buffalos was made up of coins of mixed dates, it still went for over $68,000. For many buyers, a mixed tube offers the best of both worlds: secure investment and collectible interest.
American Gold Eagle 1 Ounce $50 — 20-Coin Mint Tube
- Last sold price: $66,852
Recognizable and backed by the U.S. Mint, the Eagle is one of the most trusted bullion coins worldwide, with this sale showing just how popular it is.
1797 $10 Large Eagle Draped Bust
- Last sold price: $47,500
The sale of this classic American gold coin shows how history adds weight to value. It was graded AU55 by PCGS, which means “about uncirculated.” Coins at this level have only slight wear and still keep much of their original shine, and as most coins from the 1700s are worn down, finding one in this condition is rare.
2022 St. Helena Silver Spade Guinea Shield
- Last sold price: $40,000
Weighing just one-tenth of an ounce, this tiny coin’s value came from extreme rarity and collector demand. With a limited mintage and intricate design, it quickly became one of the most sought-after silver issues of recent years. The result shows that scarcity can outweigh precious metal content when it comes to price.
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