I just found one in my register at work yesterday. First time finding a mercury dime at work. Almost gave it away as a dime because it was so dark i thought it was an older non silver roosevelt. Then I looked closer and saw it was 1944
Maybe you could list it on eBay as the extremely rare 200-year-old mercury dime variety. And try to make the picture as grainy as possible when you list it. That adds authenticity. If the coin is so good that you don't even need a good picture, it must be real!! Really though, I wouldn't mind getting one of those for $0.52. That's one of my favorite coin designs, and the top coin on my metal detecting want list! None yet.