On both the obverse and reverse of this Peace Dollar there are diamond shaped indentations on the rim. They each cover less that 90 degrees of the rim and fade away from the center of their pattern. Any clues if this is something that could have happened at the mint or maybe just someone with a cool Craftsman tool in 1956?
Can you post a picture of the edge of the coin? From your pictures, it looks like maybe the reeded edge has been ground or filed down? I’m saying post-Mint damage (PMD).
Looks like the familiar vise-jaw print pattern to me. Clamp a coin's edge in a vise, tightly but not tightly enough to squeeze the flat areas, and that's what you get. Welcome to CoinTalk!
From your pictures, it looks like maybe the reeded edge has been ground or filed down. I left the coin at home so I don't have another picture. The reeds are all fine, no filing down. However, the coin has been cleaned at one time, it's way too shiny and there are still a few little black areas hidden in the nooks and crannies. The marks are consistant with everyones "Vise Damage" appraisal but I was hoping more for teeth errors on the machinery that holds planchets on Machine One in SF that only happened on Feb 2, 1935. All examples were destroyed except the one I found. Alas, it is not to be.