This question was posed to me and I have an assumption on the answer...but am not positive. If a FA 1919 was registered by guy 1 then sold to guy 2 without being transferred...that is obviously an illegal sale. Guy 2 now wants to sell it. Does that nullify the original tax stamp or can guy 3 go back to guy 1 and have him transfer it to guy 3? If original stuff was lost, can you do like a "lost title" like you can for a car if it was originally registered and keep its status legit...or is this just a grenade about to blow up in someones face? I'm thinking grenade...but have never looked into it and dont want to give false info.