Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
1970-S Washington Quarter Proof on 1941 Canadian Quarter
One of the most famous US mint errors: a 1970-S proof Washington quarter accidentally struck over a leftover silver 1941 Canadian quarter planchet at the San Francisco Mint.
Errors & Varieties
1927-S Standing Liberty Quarter
A key date of the Standing Liberty quarter series, struck in relatively low numbers at San Francisco and notoriously difficult to find with a fully struck head.
United States
Niue Disney Silver Coins
Officially licensed Disney-themed silver coins issued in the name of Niue, featuring classic characters, princesses, and franchises like Star Wars and Marvel through Disney's licensing.
Commemorative
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
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
1939-S Jefferson Nickel
A scarce San Francisco Jefferson Nickel from the early series, notable for being one of two tougher 1939 issues and for a well-known doubled-die reverse variety showing a doubled MONTICELLO.
United States
Ottoman Gold Sultani
The principal gold trade coin of the early Ottoman Empire, struck to match the weight and fineness of the Venetian ducat so it could compete in Mediterranean commerce.
World
Japanese Trade Dollar
A short-lived Meiji-era silver coin struck to the same weight and fineness as the Mexican and U.S. Trade Dollars so Japan could compete in East Asian commerce.
Asian