@Dearborn, I've noticed this as well. It seems American dimes are the most common for collar clash. I'd still love another example posted of a double collar clash since iv yet to see another one.
@coinfrog, the images are about to get much better from my posts with this new microscope. I'll try and get some pictures of the screen, but I can easily tell my blunt and pointed 5 coins now as well as A to denticle as long as the A isn't to banged up lol. This scope I got for my birthday is awesome. I'm seeing MD I never saw before and die cracks and gouges etc. I'm on a whole new journey now that I can see my coins lol.