Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
Twenty Pence
A seven-sided UK coin introduced in 1982 to fill a gap between the ten pence and fifty pence denominations.
British
Kellogg & Co. Gold Piece
Private gold coinage struck by the San Francisco firm Kellogg & Co. during the California Gold Rush, including the famous octagonal fifty-dollar 'slug' of 1855, filling a shortage of circulating coin.
United States