Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
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
1895-O Barber Dime
The key date of the Barber dime series, struck in unusually small numbers at the New Orleans Mint and scarce in every grade of preservation.
United States
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
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
1921 Mercury Dime
A key date of the Mercury dime series, struck in unusually low numbers amid a post-World War I economic slowdown that reduced coinage demand nationwide.
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
1921 Morgan Dollar
The final year of Morgan dollar production, struck in massive numbers at all three mints after the Pittman Act required replacement of melted silver dollars.
United States
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
1822 Capped Bust Dime
A scarce, low-mintage date within the Capped Bust dime series, considered a key date for collectors assembling this early 19th-century type.
United States
Portuguese Escudo
Portugal's national currency unit from the 1911 decimal reform, following the fall of the monarchy, until the Euro replaced it in the early 2000s.
European
Belgian Franc
Belgium's national currency from independence in 1830 through the Latin Monetary Union era and into the Euro age, minted in both French and Dutch legends.
European
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
1893-S Morgan Dollar
The undisputed key date of the Morgan dollar series, struck at San Francisco with the lowest mintage of any regular-issue Morgan, roughly 100,000 coins.
United States
1892 Barber Quarter
The first-year issue of the Barber quarter series, introducing Charles Barber's new Liberty Head design after the retirement of the earlier Seated Liberty quarter.
United States
1913 Barber Quarter
A lower-mintage date in the Barber Quarter series designed by Charles E. Barber, notable among collectors for the relatively small number struck at the Philadelphia Mint that year.
United States
1796 Draped Bust Dime
The very first dime struck by the United States Mint, featuring the Draped Bust design with a small eagle reverse and no stated denomination.
United States
1804 Draped Bust Dime
A scarce early dime featuring the Draped Bust obverse and Heraldic Eagle reverse, struck in very limited numbers and prized as a key date of the series.
United States
Decimal New Penny
The UK's smallest decimal coin, introduced on Decimal Day, 15 February 1971, inscribed "NEW PENNY" until 1982.
British
1949-S Roosevelt Dime
A relatively low-mintage early Roosevelt dime from San Francisco, considered a semi-key date that is scarce in fully struck mint condition.
United States
1996-W Roosevelt Dime
A special anniversary-issue dime struck at West Point and included only in 1996 Uncirculated Mint Sets, never released for general circulation.
United States
1901-S Barber Quarter
The single rarest business-strike coin in the Barber quarter series, with an extremely small San Francisco mintage that makes even heavily worn examples valuable.
United States
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
Italian 100 Lire Gold
The largest gold denomination of the Kingdom of Italy's Latin Monetary Union coinage, struck under Vittorio Emanuele II and Umberto I in relatively limited numbers.
European
1839 Gobrecht Dollar
The final-year Gobrecht dollar, bridging the earlier pattern strikes of 1836-1838 and the full-scale Seated Liberty dollar series that followed in 1840.
United States