I'm not American, but have a pretty sizable US state coin collection going, that I'm almost done scanning. Here's a sample of a US State coin that I've just scanned. You can see the others on my website (URL in my profile). I have not done any correction on this image. It's a lot of work, but it's going to be worth it in the end, I think. Cheers! Dan
Scanners are generally pretty terrible at imaging coins. This is not meant to be an insult to your scanning abilities -- I think you did about as well as you could with your scanner. But why not buy a cheap camera to take these? Or use a camera phone even?