Thanks for everyone input. A planchet error would explain the weight at 2.7g.
The last 2 pictures (image 11 and 12) are of a 2nd coin. I mentioned the 2nd coin in my description but seems I was not clear. I put it in there to demonstrate that this effect (weak to no Trust) is repeated on different coins, leading me to believe it is a strike/planchet issue rather than
PMD. I have 3-4 coins in various stages of weakness.
The actual coin in image 11 is round and not impinged but I think there was a little movement in the photo.
If you think the 2nd coin image actually confuses the issue, I will remove it. Was just trying to show there are others out there with similar effect. I have been going through 300-400 old 1955's which had not been touched in 40 years.
Edited by tryingmybest
03/15/2019 3:54 pm