Coin Trivia for 31 Mar 2009 The 1792 half disme was struck at what mint? What country issued the Althing coins? How many Federal Reserve Banks are there? What are clashed dies? Who appears on the 20th century U.S. Mint experimental pieces dated 1759? Answers1. Philadelphia 2. Iceland 3. 12 4. Dies that strike each other directly without an intervening planchet 5. Martha Washington 1. Philadelphia 2. Iceland 3. 12 4. Dies that strike each other directly without an intervening planchet 5. Martha Washington Category - Trivia