W515-1 Strip Card Printing Plate?

This plate was purchased yesterday by a friend of mine and I'm trying to show him evidence I have that would make it impossible to be an original w515 printing plate. The two factors are that existing full strips seem to establish that the set was printed in chronological order and therefore on the plate, Bancroft (card #4 should be to the left of the Ruth (card #3) since the plate is reversed, and the Cobb (card #10) would not appear adjacent to either of these cards and would actually be the 10th card on a 10 card strip. He is being told that the plate has been in the family and was handed down by a great uncle who supposedly worked in the factory that produced the W515's. My advice to my buddy was to share this evidence and cancel the deal, but he seems to really want this to be real despite proof that it really can't be an original plate used to produce W515's as we know them. Could someone please chime in on this, I'm referring my buddy to this site for additional input so please share freely.

The first picture illustrates evidence that full strips included 10 subjects. Picture two illustrates that the printing was done chronologically (subjects 31-40) in the strip shown. Picture three also illustrates chronology and that the Bancroft (card #4) comes after Ruth (card #3), which makes the plate in question incorrect without even mentioning Cobb who shouldn't be adjacent to either Ruth or Bancroft. This could be a lot of things, but it cannot be an original W515 printing plate used to produce W515 Strip cards as we know them.