I know absolutely nothing about doubling, except this looks kinda fishy...maybe machine doubling? I figured I would ask the cool people on Cointalk.
Question Mike - how does post strike damage make the bottom of the letters larger than they should be ?
I agree. It's similar to pressing on a balloon - it will expand 90 degrees to the direction it is compressed.
IMHO, it is damage from a coin rolling machine! I see this type of damage all of the time on coins at the end of a roll. Frank