I think I have found another example of
Machine Doubling. What do you think? This one looks like it has a lot more separation than some of the others I've found.
I was wondering if MD always happens on both sides of the coin? It seems like if there was some movement during the strike it would show up on both sides of the coin. If this is true can I use this to help determine whether or not I have found MD as compared to DD or any other type of error?
These are all scans of the same dime:


