I do see a die crack on REV on the M. I looked at the varieties for doubled die on both sides? Opinions are appreciated. Thanks!
Looks more like a circulation hit on the M. You can see the upraised rim to the top with a slight sideways hit also. Area circled..
The M took a hit from another coin. See of you can match the small die chips above IGWT. Then match the MM position.
It looks like a hit from another coin. I don’t recall ever seeing a die crack on just the raised portion of a coin.