Need some Expertise: Odd[?] printer's mark and "wet sheet transfer"?--
 

A little help, please:

Is this printer's mark in the right-hand border [as distinguished from the other mark in the bottom border] unusual?

Also, it looks to me like the back has some ink color, presumably absorbed from the card that laid beneath. I don't want to glorify these smudges, but would they be called wet sheet transfer?

I include it in B/S/T as, with no great expectations, I'll field offers on the card.

Thanks for your input.