Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
1968 No S Proof Roosevelt Dime
The first of the famous 'No S' proof Roosevelt dime errors, struck at San Francisco without its mintmark; scarce but more available than later No S dimes.
Errors & Varieties
1866 Seated Liberty Quarter (Motto)
The first year the motto IN GOD WE TRUST appeared on the quarter dollar, the low-mintage 1866 Philadelphia issue is a genuine key date of the Seated Liberty series.
United States
1893-S Morgan Dollar
The undisputed key date of the Morgan dollar series, struck at San Francisco with the lowest mintage of any regular-issue Morgan, roughly 100,000 coins.
United States
1913 Barber Half Dollar
A recognized key date of the Barber half dollar series, with a Philadelphia mintage far lower than most other years, making it prized by series collectors.
United States
1950-S/D Washington Quarter Overmintmark
A 1950 San Francisco Washington quarter struck from a die where an S mintmark was punched over a leftover D, creating one of the best-known overmintmark errors in the series.
Errors & Varieties
British Gold Britannia
The United Kingdom's flagship gold bullion coin, issued by the Royal Mint since 1987, featuring the classical figure of Britannia and enjoying capital gains tax exemption for UK residents as legal tender.
Bullion
New Jersey Copper
State-authorized copper coinage struck for New Jersey in the late 1780s, famous for its horse-head-and-plow obverse and shield reverse design.
United States
Immune Columbia Copper
An extremely rare Confederation-era copper carrying the Latin legend 'IMMUNIS COLUMBIA,' known for numerous unusual die combinations and mules with other early American and British designs.
United States
Philippine Peso (US Administration, 1903)
Silver one-peso coin struck for the Philippines under early American colonial administration, part of a new US-designed coinage system introduced in 1903.
Asian
British Trade Dollar
A silver trade dollar struck by Britain to compete with the Mexican and Spanish dollars circulating across Hong Kong, China, and Southeast Asia.
Asian
Spanish Gold Escudo (Doubloon)
The gold denomination of the Spanish Empire, whose larger multiples became famous as "doubloons," struck both in Spain and across its American colonial mints for centuries.
European
Connecticut Copper
State-authorized copper coinage struck for Connecticut in the mid-1780s, featuring a bust obverse and seated Liberty reverse across numerous die varieties.
United States
Qatar and Dubai Riyal
A short-lived joint currency issued for Qatar and Dubai between 1966 and 1973, created to replace the Gulf Rupee and used until each formed its own separate national currency.
Asian
Korean Sangpyeong Tongbo Cash
The standard cash coin of Joseon-dynasty Korea, cast for over two centuries with a huge range of mint and workshop marks on the reverse.
Asian
Two Pound Coin
The UK's bimetallic £2 coin, standardized for circulation in the late 1990s, widely used for a rotating series of commemorative reverse designs.
British
Isle of Man Noble (Platinum)
The world's first modern platinum bullion coin, struck for the Isle of Man government by Pobjoy Mint, featuring a Viking longship reverse.
Bullion
Threepence
A small British coin worth three pence, issued first as a tiny silver piece and later as the distinctive 12-sided brass 'threepenny bit' beloved for its unusual shape.
British
Five Pound Gold (Quintuple Sovereign)
The largest standard gold coin in the British sovereign family, worth five pounds and equal to five sovereigns, struck intermittently since 1820 for commemorative and collector purposes.
British
Double Sovereign
A British gold coin worth two pounds, twice the value of the standard sovereign, struck intermittently since the nineteenth century for commemorative and bullion purposes.
British
Half Crown
A long-lived British coin worth one-eighth of a pound, struck from the Tudor era until decimalisation in 1970, valued today mainly for its portraits and design variety.
British
Florin (Two Shillings)
A British silver coin worth two shillings, notable for the controversial 1849 'Godless Florin' that omitted the customary religious motto, and for foreshadowing decimal coinage.
British
Sixpence
A small British silver coin worth half a shilling, affectionately nicknamed the 'tanner,' beloved for its traditional role tucked into Christmas puddings.
British
Double Florin
A large Victorian silver coin worth four shillings, struck for only four years; its close resemblance in size to the crown and half-crown caused everyday confusion and gave it a lasting nickname.
British
Maundy Money Set
A set of tiny sterling silver coins in four denominations, specially struck each year for the monarch to distribute personally to elderly recipients in the Royal Maundy ceremony on Maundy Thursday.
British