on the 1945D.. I have never heard of a Doubled Chest variety. Most likely it is a Lamination Error. Just happens to be perpendicular to the chest so it looks like a type of Doubled Die. But it is not.
It looks to me like it took a hit with a slide to make that big scratch. See how it goes through the 1 of the date? I say PMD
yeah i see where it goes through the 1 caught my attention too just thought it was neat how it come from the tie and then goes back in at the bottom