Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Roman Follis (AE3)
A small late Roman bronze follis of the Constantine I era (AD 320-330), with an emperor's profile obverse and a Victory or vota-in-wreath commemorative reverse.
Ancient
Follis of Crispus
A small bronze follis of Crispus, eldest son of Constantine the Great, with his diademed bust and a winged Victory reverse (317-326 AD).
Ancient
Follis of Maximian
A large silvered-bronze follis of the emperor Maximian, introduced with Diocletian's coin reform of the Tetrarchy around AD 294.
Ancient
Byzantine Follis
Large bronze follis of the Byzantine Empire, this example under Constans II (from 641 AD), with an imperial portrait and a big M value mark topped by a cross.
Medieval
Follis of Galerius
A large silvered bronze follis of the emperor Galerius (Augustus AD 305-311), struck across the Tetrarchic mints with a laureate portrait and a standing deity reverse.
Ancient
Follis of Diocletian
A large silver-washed bronze coin of the Tetrarchy, introduced by Diocletian's currency reform around AD 294 with a stern laureate portrait.
Ancient
Commemorative Follis of Constantinople
Bronze city-commemorative of Constantine's era (330-340 AD): helmeted Constantinopolis on the obverse, a Victory standing on a ship's prow on the reverse.
Ancient
Follis of Licinius I
A small bronze follis of the emperor Licinius I (AD 308-324), showing his portrait and a standing deity reverse, struck around AD 320-321.
Ancient
Follis of Constantius Chlorus
Large silvered-bronze follis of Constantius I (Chlorus), the Tetrarchic emperor and father of Constantine, showing his laureate portrait facing right.
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
Roman As
A base-metal As of ancient Rome, showing the double-faced head of Janus on one side and a chariot with ROMA on the other.
Ancient
Roman Quadrans
A small Roman bronze quadrans, worth a quarter of an as, here a heavily corroded piece with a laureate head facing right.
Ancient
Roman Centenionalis
A small fourth-century Roman bronze coin, part of the reformed low-value currency struck across the empire's mints during a period of frequent monetary change.
Ancient
Roman Siliqua
Small late-Roman silver coin of the 4th century AD, with an emperor's portrait facing right and a standing robed figure on the reverse.
Ancient
Roman Quinarius
A small Roman silver quinarius, half the value of a denarius, here with a helmeted head of Roma and a prancing horse on the reverse.
Ancient
Roman Denarius
A small hammered silver coin of ancient Rome, showing an emperor's portrait and abbreviated Latin titles on one side and a deity or figure on the other.
Ancient
Roman Victoriatus
Silver Roman Republican victoriatus of the late 3rd–2nd century BC, with the laureate head of Jupiter and a Victory crowning a trophy above ROMA.
Ancient
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
Roman As/Dupondius (Uncertain)
An uncertain Roman bronze As or Dupondius: a double-faced Janus head on one side and a ship (galley/prow) with ROMA below on the other.
Ancient
Ancient Roman Coin
An unattributed ancient bronze coin of the Roman Empire, showing a right-facing portrait head on the obverse and a figure or heraldic design on the reverse.
Ancient
Roman Sestertius (Uncertain Emperor)
A large Roman imperial sestertius in bronze or orichalcum, heavily patinated with a bearded emperor's portrait and a reverse too worn to identify.
Ancient
Roman Imperial Denarius (Unidentified)
A silver denarius of the Roman Empire, 2nd century AD, showing an emperor's right-facing curly-haired portrait and a standing imperial reverse type.
Ancient
Roman Republican Denarius (Unidentified)
A silver Roman Republican denarius of about 115-114 BC: helmeted Roma on the obverse, Victory driving a two-horse chariot on the reverse.
Ancient
Nummus of Maximianus
A late-Roman bronze nummus (follis) of the emperor Maximianus, with his right-facing laureate portrait and a standing deity on the reverse.
Ancient