I think you are going for the artsy look, but for coin pictures, which I like to be crisp and show the details, they are pretty bad honestly.
I would have to agree with John. With coin photo's the art is the coin itself and not the photograph. If you're going to try to create art from coin photo's, I would suggest a montage.
I think #1 is the most "fun" - #2 is hard to look at and #3 just looks like a beat up coin that was shot out of focus. But I'd at least like to get the entire coin in the shot
I like 2 the best. It has a real neato impressionistic effect. Ignore the others! I want more of this! Coins are art in and of themselves, and making art out of coins is like putting an exponential on it all. Keep practicing, I'm looking forward to what you come up with next