Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Athenian Owl Tetradrachm
Broad silver 'New Style' tetradrachm of Athens (c. 165-42 BC): helmeted Athena on the front, owl on an amphora within an olive wreath on the back.
Ancient Coins
Aureus of Constantine I the Great
A Roman gold aureus struck for Constantine I the Great, showing his laureate portrait, from the era of his rise to sole power around AD 313.
Ancient
Solidus of Constantine I the Great
Constantine the Great's gold solidus, a high-purity coin struck from about AD 309 that became the standard of late Roman and Byzantine gold.
Ancient
Antiochos Hierax Tetradrachm
Silver tetradrachm of the Seleucid prince Antiochos Hierax, c. 242-227 BC, with a diademed royal head and a reverse figure bearing shield and spear.
Ancient
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
Ancient Hellenistic Tetradrachm
A large Hellenistic silver tetradrachm with a bearded, curly-haired head on the obverse and an eagle standing on a thunderbolt on the reverse.
Ancient
Gold Tetradrachm of Ptolemy II and Arsinoe II
Ptolemaic gold of Egypt, c. 260-240 BC, with paired busts of Ptolemy II and Arsinoe II on one side and Ptolemy I and Berenike I on the other.
Ancient
Antiochos IV Epiphanes Tetradrachm
Large silver tetradrachm of the Seleucid king Antiochos IV Epiphanes, 175-164 BC, with his diademed head and an enthroned deity reverse.
Ancient
Philip III Gold Stater
A Macedonian gold stater struck under Philip III Arrhidaeus, half-brother of Alexander the Great, showing Heracles and an enthroned Zeus.
Ancient
Solidus of Theodosius I
A late Roman gold solidus struck for the emperor Theodosius I (AD 379-395), showing his diademed portrait and the legend D N THEODOSIVS AVG.
Ancient
Penny of Cnut
Anglo-Saxon silver penny of King Cnut (Canute), showing a diademed bust facing left with a cross-and-pellets reverse, struck c.1024-1030.
Medieval Coins
Gold Dinar of Alp Arslan
A hand-struck Islamic gold coin of the Great Seljuk sultan Alp Arslan, covered in concentric Arabic inscriptions naming the ruler and caliph, AH 455–465.
Islamic
Denier of Charlemagne
A hand-struck silver denier of Charlemagne, king of the Franks: a central cross ringed by the CARLVS REX FR legend, with a royal monogram design on the reverse.
Medieval
Gold Dinar of Malik Shah I
A hand-struck Seljuk gold dinar naming Malik Shah I (r. 1072–1092), covered in Arabic inscriptions with the ruler's titles and genealogy and an ornamental cartouche.
Islamic (Medieval)
Bronze Coin of Cleopatra VII
Ptolemaic bronze coin of Cleopatra VII of Egypt, 51-30 BC, showing her draped diademed bust in profile as sole named female ruler of the dynasty.
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
Nummus of Constantine I
Small late Roman bronze nummus (follis) of Constantine I the Great (306-337 CE), identified by his right-facing imperial portrait on the obverse.
Ancient
Denarius of Cn. Pompeius Magnus
Silver Roman Republican denarius of the Pompeian party (46–45 BC), with a bearded portrait of Pompey the Great and a galley reverse reading PRO COS.
Ancient
Follis of Constantine I and Crispus
A late-Roman bronze follis linking Constantine the Great to his son Crispus, with the emperor's right-facing portrait and a paired father-and-son bust reverse.
Ancient
Shilling of Anne
A machine-struck silver shilling of Queen Anne, with her draped bust facing right and a reverse of crowned shields bearing the royal arms in a cross.
Milled
Penny of William IV
A large copper penny of King William IV, struck in the 1830s, with the king's right-facing head and the Latin legend GULIELMUS IIII D:G.
Milled
Shilling of George II
A milled silver shilling of George II, with a left-facing bust reading GEORGIVS II DEI GRATIA and a crowned cruciform-shields reverse; this one is a 1736 roses and plumes issue.
Milled
Shilling of George III
A milled silver shilling of George III from the Great Recoinage, with his laureate bust facing right and a crowned quartered royal shield within the Garter.
Milled
Bank of England Dollar
A George III silver dollar issued by the Bank of England in 1804, struck over Spanish eight-reales coins, with a laureate bust and a crowned shield reverse.
Milled