Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Prussian Vereinsthaler
A standardized silver thaler struck by the Kingdom of Prussia under the 1857 Vienna Monetary Treaty, unifying weight and fineness across many German and Austrian states before German unification.
European
German Hamburg Ducat
A small, exceptionally high-purity gold trade coin struck for centuries by the free city of Hamburg, prized for its consistent fineness and long production history.
European
Silver Three-Cent Piece (Trime)
A tiny silver coin created to match the new 3-cent postage rate, the trime is the smallest-diameter coin ever struck by the U.S. Mint.
United States
Sumatra EIC Keping (British Bencoolen)
A small tin or copper coin struck by the British East India Company for its Bencoolen settlement on Sumatra, denominated in the local unit called the keping.
Asian