Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
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
Kellogg & Co. Gold Piece
Private gold coinage struck by the San Francisco firm Kellogg & Co. during the California Gold Rush, including the famous octagonal fifty-dollar 'slug' of 1855, filling a shortage of circulating coin.
United States
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
1827 Capped Bust Quarter
One of the most celebrated rarities in American numismatics, the 1827 quarter exists only as extremely rare proof-like Originals and later Restrikes rather than typical circulation coinage.
United States
1907 High Relief Double Eagle
Sculptor Augustus Saint-Gaudens' original, dramatically high-relief double eagle design, struck in limited numbers in 1907 before being flattened for mass production; widely called America's most beautiful coin.
United States
Saint-Gaudens Double Eagle
Widely regarded as one of the most beautiful U.S. coins ever produced, designed by sculptor Augustus Saint-Gaudens at the urging of President Theodore Roosevelt.
United States
Swiss 5 Francs Silver
The Swiss 5 Francs was Switzerland's largest circulating silver coin for over a century, featuring the standing figure of Helvetia, and remains a favorite among collectors of European silver crowns.
European
Long Island Tercentenary Half Dollar
A 1936 U.S. commemorative half dollar marking 300 years since the first European settlement on Long Island, New York.
Commemorative
Dutch Guilder (Gulden)
The guilder was the standard currency of the Netherlands for more than three centuries, struck in silver and later copper-nickel before being replaced by the euro in 2002.
European
Celtic Gold Stater
Iron Age gold coins struck by Celtic tribes across Gaul and Britain, evolving from close imitations of Macedonian staters into strikingly abstract, stylized designs.
Ancient
Fiji Silver Taku
A Fijian bullion coin whose denomination, the Taku, references traditional Fijian whale-tooth currency, produced by the New Zealand Mint since 2012.
Africa & Oceania
Tunisian Franc (Beylik Era)
French-franc-aligned coinage struck in the name of the Tunisian Bey during the era of French protectorate influence, blending Arabic and French inscriptions.
Africa & Oceania
1917 Doubled Die Obverse Lincoln Cent
One of the earliest known doubled die varieties in the Lincoln cent series, showing visible doubling in the date and lettering on an early 20th-century wheat cent.
Errors & Varieties
Massachusetts Willow Tree Shilling
The rarest of Massachusetts Bay's tree-series colonial shillings, struck in secret defiance of English law and all frozen with the date 1652 regardless of actual striking year.
United States
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
Hungarian Ducat
A remarkably long-lived gold coin of the Kingdom of Hungary, showing St. Ladislaus and the Madonna and Child, prized for centuries as one of Europe's most trusted trade coins.
European
Islamic Silver Dirham (Abbasid)
The standard silver coin of the Abbasid Caliphate, continuing the text-only Kufic script tradition and widely used across a vast medieval trade network stretching from Europe to Central Asia.
Ancient
Austrian 100 Corona Gold
A large gold coin of Austria-Hungary bearing Emperor Franz Joseph I, popular today as a bullion and collector piece thanks to its restrike program.
European
Australian Florin (pre-decimal)
Pre-decimal Australian silver florin worth two shillings, minted from 1910 until decimalization replaced it with the 20-cent coin in 1966.
Africa & Oceania
Valerian Antoninianus
Radiate coin of Valerian, the only Roman emperor ever captured alive by a foreign enemy, taken prisoner by the Sassanid king Shapur I in 260 AD.
Ancient
New Zealand Florin (pre-decimal)
New Zealand's pre-decimal florin, famous for its kiwi-bird reverse design, circulated from 1933 until decimalization replaced it with the 20-cent coin in 1967.
Africa & Oceania
American Palladium Eagle
The United States Mint's palladium bullion coin, introduced in 2017 and based on Adolph Weinman's classic Winged Liberty and eagle designs.
Bullion
South African Silver Krugerrand
The silver version of the world-famous Krugerrand, launched in 2017 to mark the gold coin's 50th anniversary, using the same Kruger and springbok design.
Bullion
British Guinea
England's premier gold coin for over 150 years, named for the West African region that supplied much of its gold and eventually valued at 21 shillings.
British