Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
1938-D/S Buffalo Nickel Overmintmark
The famous final-year Buffalo nickel variety showing a D mintmark punched over a leftover S, created when Denver reused a die originally prepared for San Francisco.
Errors & Varieties
Venezuela 5 Bolivares 'Fuerte' Silver
A high-purity Venezuelan silver crown struck in 1911–1912, nicknamed the 'Fuerte' (strong) issue for restoring .900 fineness after decades of debased coinage.
Latin American
Sumatra EIC Keping (British Bencoolen)
A small tin or copper coin struck by the British East India Company for its Bencoolen settlement on Sumatra, denominated in the local unit called the keping.
Asian
1823/2 Capped Bust Quarter Overdate
One of the rarest die varieties in the entire United States quarter series, the 1823/2 overdate shows a 3 punched over a leftover 2, from an extremely limited production run.
Errors & Varieties
Japanese Bu / Ichibu-gin (silver bar coin)
Rectangular silver bar-shaped coin used as fixed-value currency in Tokugawa Japan, valued as a fraction of the gold ryo rather than by weight.
Asian
Korean Sang Pyong Tong Bo (Mun cash coin)
Traditional Korean cast cash coin with a square center hole, issued for over two centuries during the Joseon Dynasty and carrying the inscription 'Everlasting Circulating Treasure.'
Asian
1937 Doubled Die Obverse Buffalo Nickel
A doubled die variety of the 1937 Buffalo nickel showing visible doubling in the obverse date and lettering, collected alongside other notable varieties from the final years of the Buffalo nickel series.
Errors & Varieties
Vietnamese Gia Long Thong Bao (cash coin)
The founding cash coin of Vietnam's Nguyễn Dynasty, cast under Emperor Gia Long who reunified the country in 1802 and established Huế as the imperial capital.
Asian
British India Gold Mohur (East India Company)
High-value gold coin issued by the East India Company and later the British Crown in India, used for major transactions and prized today for its gold content and classic portraiture.
Asian
2008 Beijing Olympics Commemorative Coins
China issued a large multi-year coin program ahead of the 2008 Beijing Olympics, spanning circulating 1 Yuan pieces and extensive gold and silver proof series depicting Olympic sports and Beijing landmarks.
Commemorative
Chinese Qing Dynasty Cash (Qian Long Tong Bao)
A brass cash coin issued during the long, prosperous reign of the Qianlong Emperor, one of the most commonly encountered Qing Dynasty coins in collections today.
Asian
Ancient British Gold Stater (Cunobelin)
A gold stater of Cunobelin, the powerful pre-Roman British king later immortalized by Shakespeare as Cymbeline, notable for its ear-of-corn and horse reverse types.
Ancient
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
Danish Speciedaler
Denmark's large silver 'species dollar,' the principal high-value coin of the Danish monetary system before the krone replaced it in 1873–75.
European
Rama IV Siamese Baht (first machine-struck)
Landmark Siamese silver coin introduced under King Mongkut (Rama IV), marking the country's shift from traditional bullet-shaped money to modern, flat, machine-struck coinage.
Asian
Chinese Ming Dynasty Cash (Hong Wu Tong Bao)
The founding cash coin of the Ming Dynasty, issued under the Hongwu Emperor, marking the restoration of native Han Chinese rule after the collapse of the Mongol Yuan Dynasty.
Asian
Classic Head Half Eagle ($5)
A short-lived early American gold five-dollar coin created after the Coinage Act of 1834 reduced gold coin weight to keep coins in circulation rather than being melted.
United States
2019 Lowell America the Beautiful Quarter
A 2019 America the Beautiful Quarter honoring Lowell National Historical Park in Massachusetts, depicting a textile mill worker representing the American Industrial Revolution.
United States
Byzantine Electrum Aspron Trachy (Scyphate)
A distinctive cup-shaped Byzantine coin struck in electrum after Alexios I Komnenos's currency reform, featuring religious imagery and a concave scyphate flan.
Ancient
Liberty Head Double Eagle
A large gold twenty-dollar coin featuring Liberty's coronet-crowned head, struck for decades amid the California Gold Rush and westward mint expansion.
United States
British India Silver Rupee (Victoria Empress)
Silver rupee of British India struck under Queen Victoria as Empress of India, the workhorse coin of the Raj's monetary system from 1877 to 1901.
Asian
Thailand (Siam) Silver Baht 'Bullet Money' (Pod Duang)
Distinctive bent-bar silver currency used in Siam for centuries, hand-formed into a bullet-like shape and stamped with royal marks in place of a flat coin design.
Asian
1866 Seated Liberty Quarter (Motto)
The first year the motto IN GOD WE TRUST appeared on the quarter dollar, the low-mintage 1866 Philadelphia issue is a genuine key date of the Seated Liberty series.
United States
Indian Head Half Eagle ($5)
A uniquely designed gold five-dollar coin featuring an incuse (recessed) design by Bela Lyon Pratt, the only U.S. circulating coin ever struck this way.
United States