I think I got some good shots of what I think is Machine Doubling called Push. This is where the die gets a bounce and does a second strike causing a ghost pattern around the edge of a letter which resembles a double strike. This one is a bit different in that instead of just a shelf image, it has a grove. This is the same dime I showed with the crack in the die. It also shows some scratches on the reverse and may not be related. Oddly enough a similar pattern on the obverse letter R in liberty has damage as well. I'm not sure if the crack in the reverse die played a part in any of this or not. Let me know what you think.