Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
1933 Double Eagle
One of the rarest and most legally contested U.S. coins, struck but never officially released for circulation after the nation left the gold standard; a single example sold for over $18 million.
United States
1943 Bronze Cent
An extremely rare Lincoln cent mistakenly struck in leftover bronze planchets in 1943, a year when cents were officially made of zinc-coated steel to save copper for World War II.
Errors & Varieties
Decimal New Penny
The UK's smallest decimal coin, introduced on Decimal Day, 15 February 1971, inscribed "NEW PENNY" until 1982.
British
1849 Double Eagle
A unique pattern coin, the very first double eagle ever struck by the U.S. Mint, made to test the newly authorized twenty-dollar denomination; the sole surviving example is held by the Smithsonian.
United States
1793 Wreath Cent
The second cent design of 1793, replacing the controversial Chain cent with a wreath reverse, and one of three distinct cent types struck that founding year.
United States
1921 Mercury Dime
A key date of the Mercury dime series, struck in unusually low numbers amid a post-World War I economic slowdown that reduced coinage demand nationwide.
United States
1864 Two-Cent Piece
The debut year of the two-cent piece, the first US coin to bear the motto In God We Trust, issued in Small Motto and Large Motto varieties.
United States
1921-D Mercury Dime
A key-date silver dime from a post-WWI recession year when Denver struck only a small number of Mercury dimes, making it a cornerstone of the series.
United States
1895-O Barber Dime
The key date of the Barber dime series, struck in unusually small numbers at the New Orleans Mint and scarce in every grade of preservation.
United States
1901-S Barber Dime
A scarce San Francisco Mint Barber dime with a notably low mintage, ranked among the tougher dates for collectors of the series.
United States
1916-D Mercury Dime
The key date of the Mercury Dime series, the 1916-D was struck at Denver in a very low quantity, making genuine examples scarce and highly sought after by collectors.
United States
1894-S Barber Dime
One of the most famous rarities in American numismatics, struck in an extremely limited quantity at the San Francisco Mint with only a small number known today.
United States
Cook Islands Bounty Silver
A modern silver bullion and collector coin issued for the Cook Islands, depicting the famed sailing ship HMS Bounty tied to the island region's history.
Bullion
Chinese Gold Panda
China's flagship gold bullion and collector coin series, issued annually since 1982 with a new panda design each year, making it a favorite among both bullion buyers and design collectors.
Bullion
1880 Shield Nickel
A major key date of the Shield Nickel series with an extremely low business-strike mintage, making genuine circulated examples much scarcer than the coin's proofs.
United States
1893-S Morgan Dollar
The undisputed key date of the Morgan dollar series, struck at San Francisco with the lowest mintage of any regular-issue Morgan, roughly 100,000 coins.
United States
Korean 5 Yang Silver Dollar (1892)
Korea's first Western-style, dollar-sized silver coin, struck in 1892 with a coiled dragon design as part of King Gojong's currency modernization.
Asian
Argentine 8 Escudos Gold (1813)
An extremely rare gold coin from the earliest years of Argentine independence, struck briefly at Potosí under revolutionary authority and bearing the iconic Sun of May.
Latin American
1914-D Lincoln Cent
A famous key date in the Lincoln wheat cent series, prized for its low mintage from the Denver Mint and ranked among the most important dates collectors need to complete the series.
United States
1974 Aluminum Cent
An extremely rare experimental pattern struck in aluminum as a potential replacement for the copper cent amid rising metal costs, almost none of which were legally released to the public.
Errors & Varieties
1921 Morgan Dollar
The final year of Morgan dollar production, struck in massive numbers at all three mints after the Pittman Act required replacement of melted silver dollars.
United States
Indian Head Eagle ($10)
A striking early 20th-century gold eagle designed by Augustus Saint-Gaudens as part of President Theodore Roosevelt's push to beautify American coinage.
United States
1911 Canadian Silver Dollar (Pattern)
An extraordinarily rare 1911 trial striking exploring a Canadian silver dollar decades before the denomination was actually introduced, with only a handful of specimens known.
Canadian
1901-S Barber Quarter
The single rarest business-strike coin in the Barber quarter series, with an extremely small San Francisco mintage that makes even heavily worn examples valuable.
United States