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
Twenty Pence
A seven-sided UK coin introduced in 1982 to fill a gap between the ten pence and fifty pence denominations.
British
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
French 10 Francs Gold (Napoleon Rooster)
A small French gold coin from the Third Republic featuring the Gallic rooster reverse, a smaller companion to the famous 20 francs 'Coq' gold piece.
European
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
Cuba 4 Pesos Gold Jose Marti
A small gold denomination from Cuba's early republican-era gold coinage, part of a 1915–1916 series (1 through 20 pesos) struck to circulate on par with US gold currency.
Latin American
Portuguese 1000 Reis
A large silver crown of the Kingdom of Portugal, bearing the reigning monarch's portrait and national arms, serving as the country's principal high-value silver coin before the 1910 republic.
European
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
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
Netherlands 10 Gulden Gold (Wilhelmina)
The gold 10 Gulden coin featuring Queen Wilhelmina was the Netherlands' standard gold circulation and reserve coin in the early 20th century, later restruck as a recognized gold bullion piece.
European
Indian Head Gold Quarter Eagle ($2.50)
A small early 20th-century $2.50 gold coin notable for its incuse design and Native American war bonnet portrait, designed by sculptor Bela Lyon Pratt.
United States
Indian Head Gold Eagle ($10)
A striking early 20th-century $10 gold coin designed under President Theodore Roosevelt's coinage renaissance, featuring an incuse (recessed) design and a Native American-style Liberty portrait.
United States
Barber Dime
A late-19th and early-20th century silver dime designed by Charles E. Barber, featuring a classical Liberty head, part of a matching set with the Barber quarter and half dollar.
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
Chilean 100 Pesos Gold 'Condor'
Chile's flagship 20th-century gold coin, popularly called the "Condor" for the majestic Andean bird featured on its reverse, historically prized as an internationally recognized gold piece.
Latin American
Australian Threepence (pre-decimal)
Small pre-decimal Australian silver coin worth three pence, popularly recognized for its bundled wheat-ear reverse design used across most of the 20th century.
Africa & Oceania
Standing Liberty Quarter
An early 20th-century silver quarter featuring a striding figure of Liberty, prized for its artistic Type I 'bare breast' design and later modified Type II version.
United States
Liberty Head Eagle ($10)
A long-running 19th-century gold coin featuring Christian Gobrecht's Coronet Head design, minted at numerous branch mints across the expanding United States.
United States
Liberty Head Half Eagle ($5)
A widely produced 19th-century gold five-dollar coin bearing Christian Gobrecht's Coronet Head design, struck across nearly every major American branch mint of the era.
United States
Liberty Head Quarter Eagle ($2.50)
A small 19th-century gold coin featuring Christian Gobrecht's Coronet Head design, minted across many branch facilities during America's gold rush era.
United States
Braided Hair Half Cent
The final United States half cent design, struck from 1840 to 1857, featuring Liberty with braided hair, before the denomination was discontinued.
United States
Presidential Dollar - John Adams
The second coin in the U.S. Presidential Dollar series, honoring John Adams, also affected by a notable doubled and missing edge-lettering error alongside the Washington issue.
United States
Presidential Dollar - Abraham Lincoln
A Presidential Dollar honoring Abraham Lincoln, released in 2010 during the bicentennial period of his birth, featuring his portrait and the series' distinctive incused edge lettering.
United States
Presidential Dollar - Thomas Jefferson
The third coin in the Presidential Dollar series, honoring Thomas Jefferson, sharing the same edge-lettering format and Statue of Liberty reverse as the earliest issues in the program.
United States