Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Augustus Denarius
The main silver coin of Rome's first emperor, Augustus, whose long reign established the imperial monetary system that would last for centuries.
Ancient
French Louis d'Or
The Louis d'Or was the principal gold coin of the French monarchy for over 150 years, named after the kings Louis who issued it, and struck until the eve of the Revolution.
European
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
Spanish Gold Doubloon
A popular name for large Spanish colonial gold coins, typically two, four, or eight escudos, forever associated with pirate treasure and sunken Spanish galleons.
World
Persian Gold Daric
The standard gold coin of the Achaemenid Persian Empire, depicting the Persian Great King as a running or kneeling archer, used widely to pay soldiers and mercenaries.
Ancient
Syracuse Decadrachm
A large, exquisitely engraved silver coin from the Greek city of Syracuse, celebrated as one of the finest achievements of ancient Greek numismatic art, featuring the nymph Arethusa and a victorious chariot.
Ancient
Parthian Silver Drachm
Long-running silver coin of the Parthian Empire, showing the king's portrait on the obverse and the dynasty's founder as a seated archer on the reverse.
Ancient
Trajan Denarius
The silver coin of Emperor Trajan, whose reign marked the Roman Empire's greatest territorial extent, with coin types celebrating his Dacian conquests and vast building program.
Ancient
Roman Denarius
The workhorse silver coin of ancient Rome for over four centuries, used across the Republic and Empire and one of the most widely collected categories of ancient coinage today.
Ancient
Diocletian Follis
Large bronze follis of Diocletian, whose sweeping reforms ended the Crisis of the Third Century, established the Tetrarchy, and introduced this new standardized coin denomination in 294 AD.
Ancient
Hadrian Denarius
The silver coin of Emperor Hadrian, famous for its extensive 'travel series' honoring the provinces he visited during his unusually extensive tours of the empire.
Ancient
Flowing Hair Half Dime
One of the earliest United States silver coins, the Flowing Hair Half Dime was struck only in 1794 and 1795 and is a landmark rarity for early American coinage collectors.
United States
Flowing Hair Dollar
The first silver dollar struck by the United States Mint, issued in 1794-1795 with a flowing-haired Liberty and small eagle reverse; the 1794 date is among the rarest and most valuable U.S. coins.
United States
Kushan Gold Dinar of Kanishka
A gold dinar of the great Kushan emperor Kanishka I, famous for its rich mix of Greek, Iranian, Indian, and Buddhist deities depicted on the reverse.
Ancient
Sacagawea Golden Dollar
A golden-colored dollar coin introduced in 2000 depicting Sacagawea carrying her infant son, created to replace the unpopular Susan B. Anthony dollar in everyday commerce.
United States
Draped Bust Half Cent
An early U.S. copper coin depicting a draped bust of Liberty, struck for everyday small change in the first decade of the 19th century.
United States
1885 Trade Dollar
One of the rarest official United States coins, a proof-only issue struck years after the Trade dollar series had officially ended, with only a handful of examples known.
United States
Domitian Denarius
Silver coin of the last Flavian emperor, Domitian, whose lengthy autocratic reign produced abundant, well-struck denarii before his assassination and damnatio memoriae.
Ancient
1804 Draped Bust Dollar
One of the most famous rarities in American numismatics, a silver dollar dated 1804 but actually struck decades later, with only 15 known examples.
United States
Umayyad Silver Dirham
A silver coin of the Umayyad Caliphate struck after Caliph Abd al-Malik's monetary reform, bearing only Arabic inscriptions and setting the template for centuries of Islamic coinage.
World
Chola Dynasty Gold Kahavanu
A gold coin of the powerful medieval South Indian Chola dynasty, typically bearing the dynastic tiger, fish, and bow emblem alongside a standing or seated royal figure.
Asian
Vespasian Denarius
The silver coin of Emperor Vespasian, founder of the Flavian dynasty, notably including the famous 'Judaea Capta' series commemorating Rome's suppression of the Jewish revolt.
Ancient
Commodus Denarius
Silver denarius of Commodus, the erratic son of Marcus Aurelius, whose later coinage famously depicted him as Hercules with lion skin and club.
Ancient
Western Satrap Silver Drachm
A silver drachm of the Western Satraps, Saka rulers of western India, easily identified by a crude Greek-style portrait obverse and a three-arched hill reverse.
Ancient