United States Coin Database (included in all versions of Coin Collector's Assistant) The United States Coin Database is a comprehensive prepopulated listing of all United States coinage since 1793 by date and mint mark. It includes date, mint mark, denomination, coinage metal, mintage (business and proof), and variety. A high quality color picture is included for all main coin types and also all commeratives. Recent additions to this database are the Sacagawea Dollar and the 50 states circulating quarters program.