Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Guinea
Historic British gold coin named for the West African region that supplied much of its gold, valued at 21 shillings for most of its history and predecessor to the modern sovereign.
British
1937 Washington Quarter Doubled Die Obverse
A well-known doubled die variety of the early Washington quarter series, showing visible doubling in the obverse lettering and date from a misaligned die hubbing.
Errors & Varieties
1943 Washington Quarter Doubled Die Obverse
A wartime-era doubled die variety of the Washington quarter showing clear doubling on obverse design elements, popular among collectors of Mint error and variety coins.
Errors & Varieties
1916-D Mercury Dime
The key date of the Mercury Dime series, the 1916-D was struck at Denver in a very low quantity, making genuine examples scarce and highly sought after by collectors.
United States
Standing Liberty Quarter
An early 20th-century silver quarter featuring a striding figure of Liberty, prized for its artistic Type I 'bare breast' design and later modified Type II version.
United States
2005 Minnesota State Quarter Extra Tree (Doubled Die)
A doubled-die variety of the 2005 Minnesota state quarter that produces the illusion of an extra tree trunk among the treeline in the design, popular with modern variety collectors.
Errors & Varieties
United Arab Emirates Dirham
Federal currency introduced in 1973 after the formation of the UAE, unifying the emirates' varied prior currencies into a single dirham divided into 100 fils.
Asian
1921 Standing Liberty Quarter
A low-mintage key date of the Standing Liberty quarter series struck only at Philadelphia, valued for its scarcity across all grades.
United States
1878 Morgan Dollar (8 Tail Feathers)
The first-year Morgan dollar variety showing the eagle with eight tail feathers, quickly replaced mid-year by the standard seven-feather design.
United States
Grant Memorial Gold Dollar
A commemorative gold dollar marking the centennial of Ulysses S. Grant's birth, famous for a rare small-star variety on the obverse.
Commemorative
1873 Two-Cent Piece (Proof Only)
The final year of the two-cent piece, struck only in proof for collectors rather than for circulation, and split into Closed 3 and Open 3 date varieties.
United States
Colombia 8 Reales
Silver 8 reales struck first under Spanish colonial rule in New Granada and later, after independence, in the name of the new Colombian republic.
Latin American
Colombian 8 Reales (Nueva Granada)
The classic Spanish colonial "piece of eight" struck at the mints of Bogotá and Popayán, continuing in modified form after Colombian independence before decimal reform.
Latin American
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
1943/2-P Jefferson Nickel Overdate
A wartime Jefferson nickel overdate variety in which traces of an underlying 2 can be seen beneath the 3 in the date, created when a working die was re-hubbed with a different year's date.
Errors & Varieties
Rwandan Silver African Wildlife
A modern bullion coin series issued under Rwandan sovereignty depicting various African animals, minted in Germany and produced in different subseries by animal theme.
Africa & Oceania
Byzantine Follis
The large bronze workhorse coin of everyday Byzantine commerce, reformed by Emperor Anastasius I in 498 AD with a prominent Greek numeral denoting its value of 40 nummi.
Ancient
1901-S Barber Quarter
The single rarest business-strike coin in the Barber quarter series, with an extremely small San Francisco mintage that makes even heavily worn examples valuable.
United States
1942/1-D Mercury Dime Overdate
The Denver counterpart to the famous 1942/1 overdate, this Mercury Dime shows a doubled date from reused 1941 die-making equipment and is scarcer than the Philadelphia version.
Errors & Varieties
Seated Liberty Dime
Struck for over five decades, the Seated Liberty Dime features Christian Gobrecht's seated figure of Liberty and includes many collectible date, mint, and arrows/rays varieties.
United States
1794 Flowing Hair Dollar
The very first silver dollar struck by the United States Mint, produced in extremely limited numbers and ranking among the most valuable American coins in existence.
United States
Dutch Lion Daalder (Leeuwendaalder)
A silver trade coin of the Dutch Republic showing an armored knight and a rampant lion, exported in vast quantities to the Levant, Russia, and the American colonies.
European
1970-S Small Date Lincoln Cent
A scarcer date-size variety of the 1970-S Lincoln cent featuring a smaller, lower-positioned 7 in the date compared to the more common large date variety struck the same year.
Errors & Varieties
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