Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.

Spanish 2 Reales Pillar
The Pillar 2 Reales was a fractional Spanish colonial silver coin featuring the famous Pillars of Hercules design, struck at mints across Spanish America and widely used in international trade.
Latin American
1796 Draped Bust Quarter
The very first quarter dollar struck by the United States Mint, a one-year type coin with a tiny mintage that is treasured by collectors of early American silver.
United States
Spanish 8 Reales (Piece of Eight)
The legendary 'piece of eight,' Spain's silver dollar-sized coin that became the world's first truly global currency and the direct ancestor of the U.S. dollar.
World
Peru 8 Reales (Lima Mint)
The flagship silver dollar-size coin of colonial and early republican Peru, struck at the historic Lima mint from cob and pillar types through crowned-shield busts.
Latin American
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
Panama-Pacific $50 Gold (Round)
A massive round commemorative gold piece struck for the 1915 Panama-Pacific International Exposition, one of the rarest and most valuable U.S. commemorative coins ever issued.
Commemorative
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
Two Pound Gold (Double Sovereign)
A gold coin worth two pounds sterling and roughly twice the weight of a sovereign, struck mainly for jubilees, coronations, and modern proof or bullion sets rather than daily circulation.
British
1842-O Small Date Seated Liberty Quarter
A famous condition and date rarity of the Seated Liberty series, struck at New Orleans from leftover small-date dies originally prepared for Philadelphia proof coinage.
United States
Una and the Lion Five Pound
A legendary 1839 gold proof depicting young Queen Victoria as Una leading a lion, widely considered one of the most beautiful coins ever struck and a benchmark of Victorian coin art.
British
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
Shield Nickel
The first copper-nickel five-cent coin, the Shield Nickel features a national shield on the obverse and was issued from 1866 to 1883, including rare rays and proof-only dates.
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
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
2000 Sydney Olympics Coin Series
The Royal Australian Mint issued one of the largest circulating commemorative coin programs ever produced for a single Olympics, featuring numerous $5 designs alongside premium silver and gold proof coins for the Sydney 2000 Games.
Commemorative
Austrian Florin (Gulden)
The main silver coin of Austria-Hungary in the second half of the 19th century, used until the krone replaced it in the 1892 monetary reform.
European
Panama Balboa Silver
Panama's dollar-sized silver crown, named for explorer Vasco Nunez de Balboa and pegged 1:1 to the US dollar throughout its history.
Latin American
Lincoln Memorial Cent
The long-running Lincoln cent reverse featuring the Lincoln Memorial, used for half a century and one of the most commonly encountered coins in American pockets and collections.
United States
Maximian Follis
Large bronze follis of Maximian, co-Augustus with Diocletian who ruled the western half of the empire as part of the Tetrarchy and shared the same reformed coinage design.
Ancient
Indian Head Cent
A long-running 19th-century one-cent coin depicting Liberty in a Native American-style feathered headdress, popular with collectors for its accessible half-century run.
United States
Maundy Twopence
A small silver twopence struck each year as part of the Royal Maundy set, historically descended from the medieval silver half groat and still distributed in the annual royal alms ceremony.
British
Mamluk Gold Dinar
A gold dinar of the Mamluk Sultanate, which ruled Egypt and Syria for over two and a half centuries, continuing the Islamic epigraphic gold coinage tradition until the Ottoman conquest.
World
50 Euro Cent Coin
A gold-colored circulating euro coin worth half a euro, struck in a copper-based Nordic gold alloy and easily recognized by its distinctive scalloped-edge shape and national obverse design.
European
Double Florin
A large Victorian silver coin worth four shillings, struck for only four years; its close resemblance in size to the crown and half-crown caused everyday confusion and gave it a lasting nickname.
British