Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Monroe Doctrine Centennial Half Dollar
A 1923 U.S. silver commemorative half dollar marking the centennial of the Monroe Doctrine, with jugate portraits of James Monroe and John Quincy Adams.
Classic Commemorative
Alexander the Great Gold Stater
Gold stater struck in the name of Alexander the Great, with a helmeted Athena obverse and Nike holding a wreath on the reverse; this example c. 323-315 BC.
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
San Francisco-Oakland Bay Bridge Half Dollar
A 1936 U.S. silver commemorative half dollar celebrating the opening of the San Francisco-Oakland Bay Bridge, with a bridge span and a California grizzly bear.
Classic Commemorative
Rijksdaalder van Leicester
A large silver Dutch rijksdaalder of the Leicester type, with a helmeted armored bust and ruff on the obverse and a compartmented heraldic shield on the reverse.
Early Modern
Antoninianus of Laelianus
Rare billon antoninianus of the short-lived Gallic usurper Laelianus, showing his radiate-crowned bust and a Roman deity or personified virtue.
Ancient Coins
Tetradrachm of Ptolemy I
Silver tetradrachm of Ptolemy I Soter of Egypt, c. 305-283 BC, with his diademed portrait and the Ptolemaic eagle standing on a thunderbolt.
Ancient
Walking Liberty Half Dollar Centennial Gold
A 2016-W gold collector coin marking the centennial of the 1916 Walking Liberty half dollar, struck in 1/2 oz of 24-karat gold at West Point.
Half Dollar
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
Lexington-Concord Sesquicentennial Half Dollar
A 1925 U.S. silver commemorative half dollar marking the 150th anniversary of the battles of Lexington and Concord, showing the Concord Minuteman and the Old Belfry.
Classic Commemorative
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
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
France 2 Euro D-Day Anniversary Commemorative
A 2014 French bi-metallic 2 euro commemorating the 70th anniversary of the D-Day landings, dated 1944-2014 with a ring of EU stars.
Commemorative
Antoninianus of Salonina
Billon antoninianus of the empress Salonina, wife of Gallienus, showing her draped bust and a standing deity on the reverse (256-257 AD).
Ancient
George Washington Presidential Dollar
The 2007 golden dollar honoring George Washington, first coin in the U.S. Presidential $1 series, with a left-facing portrait and Statue of Liberty reverse.
Dollar
Sestertius of Hadrian
Large Roman bronze sestertius of Emperor Hadrian, showing his bearded curly-haired profile and a standing draped figure with a Latin legend on the reverse.
Ancient Coins
Sovereign of George IV
A milled gold sovereign of Great Britain struck under George IV, with the king's laureate head and Pistrucci's St George slaying the dragon reverse, dated 1821.
Milled
Tetradrachm of Ptolemy XII
Silver tetradrachm struck under Ptolemy XII of Egypt, father of Cleopatra VII, bearing a diademed royal Ptolemaic head and the dynasty's eagle-on-thunderbolt reverse.
Ancient
Prinsendaalder (Rijksdaalder)
A large silver rijksdaalder of the Dutch Republic showing an armored bust with sword, popularly named the Prinsendaalder after the Prince of Orange.
Early Modern
Arkansas Centennial Half Dollar (Robinson)
A 1936 U.S. silver commemorative half dollar pairing a portrait of Senator Joseph T. Robinson with the Arkansas Centennial eagle; a scarce one-year Philadelphia issue.
Classic Commemorative
Milled Sixpence of Elizabeth I
An early machine-struck English silver sixpence of Elizabeth I, showing her crowned draped bust with a rose and the royal shield above a date.
Milled
Bank of Upper Canada Half-Penny Token
Copper half-penny token of the Bank of Upper Canada, with St. George slaying the dragon and the bank's crowned heraldic arms, dated 1857.
Canadian & Provincial
U.S. Constitution Bicentennial Silver Dollar
A 1987 U.S. Mint 90% silver commemorative dollar marking the 200th anniversary of the Constitution, with a quill-pen obverse.
Modern Commemorative
Gold Square Mohur of Jahangir
A square gold mohur of the Mughal emperor Jahangir, bearing Persian calligraphy, the Lahore mint, and regnal-year dating.
Mughal India