Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Mercury Dime Centennial Gold
A 2016-W gold collector coin marking the centennial of the 1916 Mercury dime, struck in 1/10 oz of 24-karat gold at West Point.
Dime
Maria Theresa Thaler
A large silver Austrian trade coin bearing the bust of Empress Maria Theresa, famously frozen at the date 1780 and restruck for centuries.
World
Roman Republic Semuncia
Smallest Roman Republican bronze denomination, worth half an uncia, struck around 217-215 BC with a Mercury head and a galley prow.
Ancient
500 Reis
A Portuguese silver 500 Reis of Queen Maria II, with her left-facing draped bust on the obverse and a crowned coat of arms on the reverse.
Modern
Medieval Halfgroat of Henry VII
Hammered silver twopence of England's first Tudor king, with a crowned royal portrait and a long-cross reverse over a shield.
British Isles
Spanish Colonial 2 Reales (Milled)
A small milled silver coin of the Spanish Empire, struck in colonial American mints; this example is dated 1776 and shows heraldic lions, castles and a crowned shield.
Colonial
2.5 Escudos
A copper-nickel 2.5 Escudos of the Portuguese Republic, showing a sailing caravel on the obverse and the national shield with the value 2$50.
Modern
Charles II Twopence
A small milled twopence of Charles II, showing the king's profile bust on the obverse and a crowned mark of value on the reverse.
Milled
Irish Gun Money Halfcrown (30 Pence)
Emergency base-metal halfcrown struck for James II in Ireland during 1689–1690, valued at 30 pence and carrying his portrait and, on many issues, the month of striking.
Emergency Coinage
Counterstamped 8 Reales
A Charles IV silver 8 reales later punched with counterstamps and pierced with a central hole, layering a second life onto the classic Spanish dollar.
Colonial
Panama-Pacific Exposition $50 (Octagonal)
An eight-sided $50 gold commemorative struck for San Francisco's 1915 world's fair, showing Minerva and her owl — the largest U.S. coin of its era.
Classic Commemorative
20 Soles de Oro
A Peruvian gold 20 soles de oro showing a seated Liberty with crown, torch and radiant sun, part of Peru's mid-20th-century gold coinage.
Circulation
Solidus of Constantine II
Late Roman gold solidus of Constantine II, showing his ornately crowned bust and a seated figural reverse type.
Ancient Coins
Groat of William IV
A small silver fourpenny piece of William IV (1836–1837), with a seated Britannia reverse; the coin that revived the modern British groat.
Milled
Drachm of Antiochos II Theos
Silver drachm struck under Antiochos II Theos of the Seleukid realm, showing a seated helmeted Athena and, on the reverse, Nike beside an altar.
Ancient
Vespasian Judaea Capta Denarius
Silver denarius of Emperor Vespasian (71–79 AD) with his laureate bust and a Judaea Capta reverse showing a mourning seated captive.
Ancient
Solidus of Justinian I
Byzantine gold solidus of Emperor Justinian I (527-565 AD), showing his crowned imperial bust with a seated figure on the reverse.
Ancient Coins
Antigonos II Gonatas Tetradrachm
Silver tetradrachm of the Macedonian king Antigonos II Gonatas, c. 275-270 BC, with a bearded royal head and a seated Nike holding a wreath.
Ancient
Denarius of Nerva
Roman Imperial silver denarius of Emperor Nerva (96-98 AD), with his laureate portrait and the legend IMP NERVA CAES AVG, and a seated Concordia reverse.
Ancient
1 Sol (Gold)
A 19th-century Peruvian 1 Sol note from El Banco de Piura, with a seated torch-bearer and a standing laborer flanking a bold UN SOL.
Circulation
Antoninianus of Carinus
Bronze radiate coin of the emperor Carinus (283-285 AD), recognizable by his spiked crown and a standing or seated deity on the reverse.
Ancient
Antiochos III Tetradrachm
A large Seleucid silver coin of Antiochos III the Great, showing his diademed head and a seated deity holding shield and spear.
Ancient
British Farthing
Small copper farthing of King George II, with his laureate bust facing left and a seated Britannia on the reverse; struck in the 1730s.
British Isles
Lysimachos Tetradrachm
Silver tetradrachm of Lysimachos of Thrace, c. 297-282 BC, showing the deified head of Alexander the Great and Athena seated with a shield and spear.
Ancient