I have seen these tiny guns several times over the years. They are usually silver toned and usually a fob or charm. These working guns were originally sold with tiny ball ammunition and stoppers and fired very powerfully for their size. Not deadly but I wouldn't want to get shot by one! They were made in Germany around the 1950's, and were beautifully and intricately made. This derringer in in rare gold tone and is 1 5/8 inches long. You can cock the hammer and pull the trigger.