Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Aureus of Augustus
Roman imperial gold coin bearing the bare head of Augustus, first emperor of Rome, struck during his reign from 27 BC to 14 AD.
Ancient Coins
Gold Dinar of Baybars I
A hand-struck gold coin of the Mamluk sultan Baybars I, covered on both faces with Arabic calligraphy naming the ruler and struck in Egypt between 1260 and 1277 CE.
Islamic
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
Antoninianus of Tetricus I
A billon antoninianus of the Gallic emperor Tetricus I (270–273 AD), showing his radiate portrait and a standing figure of Pax on the reverse.
Ancient
Five Guineas of George II
The largest English gold coin of George II's reign, showing his laureate profile and a crowned heraldic shield of the royal arms on the reverse.
Milled
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
Solidus of Valentinian I
The gold solidus of Valentinian I (AD 364-375), a pure-gold coin bearing his pearl-diademed profile that anchored the late Roman monetary system.
Ancient
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
Aureus of Faustina II
Roman imperial gold coin with the draped bust of Faustina II, daughter of Antoninus Pius and wife of Marcus Aurelius, struck around 147-150 AD.
Ancient Coins
Penny of Cynethryth
Anglo-Saxon silver penny of Cynethryth, queen of Mercia and wife of Offa, and the only Anglo-Saxon queen named on her own coinage.
Medieval Coins
Five Guineas of Anne
Queen Anne's largest gold coin, the celebrated 1703 issue struck with VIGO below the bust from gold captured at the Battle of Vigo Bay.
Milled
Antoninianus of Caracalla
The antoninianus introduced by Caracalla around AD 215, a radiate-crowned double denarius in debased silver that reshaped Roman coinage.
Ancient
Fatimid Dinar of Imam Nizar
An 11th-century Fatimid gold dinar with concentric circular Kufic inscriptions naming the ruler and Shi'a invocations, a hallmark of Fatimid coinage.
Islamic (Medieval)
Aureus of Marcus Aurelius
Small Roman gold coin of the reign of Marcus Aurelius; this piece shows a diademed portrait and a standing deity or personification, dated to 163 AD.
Ancient Coins
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
Antoninianus of Valerian II
Roman radiate coin of Valerian II, the young Caesar (c. 253-260 AD), showing his spiked crown and a standing figure on the reverse.
Ancient
Library of Congress Bicentennial Silver Dollar
A 2000 U.S. silver dollar honoring the 200th anniversary of the Library of Congress, with a 'We the People' quill-and-scroll obverse and the Library facade on the reverse.
Modern Commemorative
Denarius of Septimius Severus
Silver denarius of the Roman emperor Septimius Severus (193–211 AD), showing his laureate head and a standing reverse figure.
Ancient
Half Groat of Henry VIII
A small hammered English silver coin worth twopence, struck across the reign of Henry VIII and bearing his crowned facing bust.
Hammered
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
Two Guineas of George II
A large milled gold two-guinea piece of George II, with his left-facing laureate head and a crowned garnished shield of the royal arms; the pictured coin is dated 1738.
Milled
Antoninianus of Claudius II
A billon antoninianus of the Roman emperor Claudius II Gothicus (268–270 AD), showing his radiate bust on one side and a standing deity on the other.
Ancient
Irish Groat of Henry VIII
A hand-hammered silver fourpence struck for Ireland under Henry VIII, famed for introducing the crowned harp to Irish coinage.
Hammered
Antoninianus of Aurelian
Late Roman billon coin of Emperor Aurelian, showing his radiate-crowned bust and a standing deity or personification on the reverse.
Ancient Coins