Coin Trivia for 9 Sep 2008 In what year was the Buffalo 5-cent piece last struck? What does FAO stand for on coins? Where does the star appear on the modern United States note? What is a vecture? E Pluribus Unum was first used on coins in what year? Answers1. 1938 2. Food and Agricultural Organization (of the United Nations) 3. In place of the prefix letter of the serial number 4. Any transportation-related numismatic collectible 5. 1796 1. 1938 2. Food and Agricultural Organization (of the United Nations) 3. In place of the prefix letter of the serial number 4. Any transportation-related numismatic collectible 5. 1796 Category - Trivia