Interesting Piedmont 350 print defect
 

I was going through my duplicates pile and noticed this interesting defect in the back. I have had this card for since I first got into t206 so I didn't think very much of it originally. Both of the following examples are Frank Oberlin mine is the one in the slab the other one with writing on it was found by another collector.

Can this mark be found on any other card in the set? Any other Oberlins out there?
https://i.imgur.com/XKWmfjg.jpg

https://i.imgur.com/I1tRi1p.jpg

https://i.imgur.com/hCxfdXk.png

Very possible that it could be found on one or two other subjects. I checked to see if I had one of these in my PD350 print flaw folder and I didn't have an Oberlin with this flaw I'll have to check and see if I have any other players with this flaw.

Here's one PD350 flaw that's found on three different subjects.

Attachment 531788

I didn't have any other subjects with this flaw in my folder but in a quick check I found another Oberlin like the two you posted.

You didn't post a front scan of yours but I would bet it has the same print flaw on the front that this one has on the top left border.
Attachment 531794

It does indeed have that flaw, great observation
https://i.imgur.com/N1P0LEv.png