Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Constantine URBS ROMA Commemorative
A small bronze commemorative honoring the city of Rome with a helmeted Roma obverse and the iconic she-wolf suckling Romulus and Remus on the reverse.
Ancient
Constantine CONSTANTINOPOLIS Commemorative
A small bronze commemorative celebrating the founding of Constantinople, showing Victory standing on a ship's prow on the reverse.
Ancient
Constantine the Great Follis
A bronze coin of Constantine the Great, the emperor who legalized Christianity and founded Constantinople, struck at numerous mints across a transforming empire.
Ancient
Constantine Sol Invictus Follis
A common bronze follis of Constantine the Great honoring Sol Invictus, the radiate sun god, struck empire-wide before his turn toward Christianity.
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
Roman Republic Denarius
The workhorse silver coin of the Roman Republic, introduced during the Second Punic War and struck by a long line of moneyers with ever-changing, often political, designs.
Ancient
Roman Aureus of Augustus
A gold coin struck under Rome's first emperor, Augustus, marking the establishment of a stable imperial gold coinage that funded and symbolized the new Roman Empire.
Ancient
Julian II Bull Bronze
A large bronze maiorina of Julian the Apostate with a bull reverse, associated with his brief attempt to revive traditional pagan worship in Rome.
Ancient
Two Pound Coin
The UK's bimetallic £2 coin, standardized for circulation in the late 1990s, widely used for a rotating series of commemorative reverse designs.
British
Japanese Bunkyu Eiho (cash coin)
A late Edo-period Japanese cash coin worth 4 mon, larger than the common Kan'ei Tsūhō, issued in the final years of the Tokugawa Shogunate to help ease chronic small-coin shortages.
Asian
Chinese Song Dynasty Cash Coin
A round bronze coin with a square center hole issued during China's Song Dynasty, among the most massively produced and commonly collected pre-modern Chinese coin types.
Asian
Chinese Spade Money (Bu Coin)
An early Chinese bronze currency shaped like a miniature farming spade, used across several competing Zhou-era states before round coinage became standardized.
Asian
Chinese Cash Coin (Qing Dynasty 'Kangxi Tongbao')
Classic cast bronze cash coin bearing the reign title of Emperor Kangxi, struck across many provincial mints during one of the longest reigns in Chinese history.
Asian
Vietnamese Tu Duc Thong Bao (cash coin)
A cast bronze or zinc cash coin issued under Emperor Tự Đức of Vietnam's Nguyễn Dynasty, round with a square center hole in the traditional East Asian style.
Asian
Napoleon 20 Franc Gold Coin
A historic French gold coin first struck under Napoleon Bonaparte in 1803, later issued under successive French governments and long used as a benchmark gold coin across Europe.
European
Republican Victoriatus
A lighter-weight Roman Republican silver coin depicting Jupiter and a Victory crowning a trophy, used largely for trade with the Greek-influenced south.
Ancient
Magnentius Double Centenionalis
A large bronze coin of the usurper Magnentius featuring one of the earliest large Christian Chi-Rho symbols on Roman coinage.
Ancient
Republican Quinarius
A half-denarius silver coin of the Roman Republic, often depicting the twin gods Castor and Pollux (the Dioscuri) riding on horseback.
Ancient
1943 Copper Lincoln Cent
An extremely rare mint error where a handful of 1943 cents were struck on leftover bronze planchets instead of the wartime steel used that year, making it one of the most famous US coin errors.
Errors & Varieties
Constantius II Centenionalis
A bronze centenionalis of Constantius II featuring the dramatic 'Fallen Horseman' reverse, one of the most famous designs of the Late Roman Empire.
Ancient
Papal States Scudo
The principal silver coin of the Papal States, bearing the portrait or arms of the reigning pope alongside religious imagery, struck for centuries until the Papal territories' loss of independence.
European
Licinius Follis
Bronze follis of Licinius, the last rival emperor to challenge Constantine the Great before his defeat and the reunification of the Roman Empire under Constantinian rule in 324 AD.
Ancient
Constantius I Chlorus Follis
Reform-era bronze follis of Constantius I Chlorus, Caesar and later Augustus of the western Tetrarchy, remembered chiefly as the father of Constantine the Great.
Ancient
Nero Sestertius
A large bronze/brass coin of Nero widely admired for exceptional artistry, including famous reverse scenes of the Port of Ostia and the closed Temple of Janus.
Ancient