Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
2005 Minnesota State Quarter Extra Tree (Doubled Die)
A doubled-die variety of the 2005 Minnesota state quarter that produces the illusion of an extra tree trunk among the treeline in the design, popular with modern variety collectors.
Errors & Varieties
1891 Seated Liberty Quarter
The final year of the long-running Seated Liberty quarter design before it was replaced by the Barber quarter in 1892, popular as an affordable closing-date type coin.
United States
1937 Washington Quarter Doubled Die Obverse
A well-known doubled die variety of the early Washington quarter series, showing visible doubling in the obverse lettering and date from a misaligned die hubbing.
Errors & Varieties
1943 Washington Quarter Doubled Die Obverse
A wartime-era doubled die variety of the Washington quarter showing clear doubling on obverse design elements, popular among collectors of Mint error and variety coins.
Errors & Varieties
Fugio Cent
The first coin authorized by the United States government, featuring a sundial, the word 'Fugio,' and the motto 'Mind Your Business,' often linked to Benjamin Franklin.
United States
Russian Ruble (Imperial)
The principal silver coin of the Russian Empire, struck for over two centuries and bearing the portraits of successive tsars and the imperial double-headed eagle.
European
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
1943 Steel Cent
A one-year-only zinc-coated steel cent struck to conserve copper for World War II ammunition and equipment production, easily recognized by its silvery color.
United States
1864 L Indian Head Cent
A famous variety of the 1864 bronze Indian Head cent bearing a tiny L on Liberty's ribbon for designer James Longacre, one of the most recognized key varieties in the series.
United States
1972 Doubled Die Lincoln Cent
A famous Lincoln cent error showing strong doubling on the obverse date and lettering, caused by a misaligned die hub during production at the Philadelphia Mint.
Errors & Varieties
Florentine Florin
Introduced in 1252, the gold florin of Florence became medieval Europe's leading trade coin, its lily emblem and fixed gold standard copied by dozens of other mints.
European
Venetian Gold Ducat
First struck in 1284, the Venetian gold ducat became medieval Europe's most trusted trade coin, prized for centuries for its unwavering weight and purity.
European
Presidential Dollar Series
A circulating dollar coin series honoring US presidents in order of service, featuring edge-lettered mottos and a shared Statue of Liberty reverse across every release.
United States
US Bicentennial Quarter (1976)
A special dual-dated quarter struck to celebrate the 200th anniversary of American independence, featuring a colonial drummer boy on the reverse in place of the usual eagle.
United States
Zanzibar Riyal
Silver riyal issued by the Sultanate of Zanzibar under Sultan Barghash bin Said, designed to circulate alongside the widely trusted Maria Theresa thaler in East African trade.
Africa & Oceania
Ottoman 20 Kurus
Ottoman silver coin denominated in kuruş, bearing the sultan's ornate calligraphic tughra rather than a portrait, in keeping with Islamic artistic tradition.
World
Danish 2 Rigsdaler
A large silver crown of the Kingdom of Denmark, double the standard rigsdaler denomination, often struck to commemorate specific royal events before Denmark adopted the krone in 1873.
European
1878 7/8 Tail Feathers Morgan Dollar
A famous first-year Morgan dollar variety showing an eagle with 7 tail feathers struck over an earlier 8-feather design, resulting from a mid-year design revision by chief engraver George T. Morgan.
Errors & Varieties
United States Trade Dollar
A heavier silver dollar issued specifically for trade with China and East Asia, the Trade Dollar circulated internationally before being demonetized and later collected as a design classic.
United States
2000-P Sacagawea/Washington Quarter Mule
An extraordinarily rare mint error pairing the golden Sacagawea dollar obverse with a Washington quarter reverse die, one of the most famous modern mule errors in U.S. coinage.
Errors & Varieties
French Ecu (Louis d'Argent)
France's principal large silver coin of the pre-revolutionary era, bearing the reigning king's portrait, used as the standard silver crown-sized coin for over a century before decimalization.
European
1939 Royal Visit Silver Dollar (Parliament)
A commemorative Canadian silver dollar marking the 1939 royal tour of King George VI and Queen Elizabeth, with the Parliament Buildings depicted on the reverse.
Canadian
Islamic Gold Dinar (Umayyad)
The first purely epigraphic Islamic gold coin, introduced by Caliph Abd al-Malik around 696 AD, replacing figural Byzantine-style imagery with Quranic inscriptions.
Ancient
Chinese Tang Dynasty Cash
The influential bronze cash coin introduced in the Tang Dynasty, inscribed "Kai Yuan Tong Bao," that established the round-with-square-hole design copied for over a thousand years.
Asian