1926 Exhibits Ruth Question

[glchen]

Today, I was looking at my 1925 Exhibits Ruth, and suddenly realized that it seemed to be too "blue" to be a 25 Exhibits. I then compared it to other 25 Exhibits online, and after reviewing, it didn't seem to be correct. Here is a link to a 1925 Exhibits Ruth that sold in a Huggins and Scott auction: Link

However, my 1928 Exhibits Ruth seemed a "brighter" blue, so I thought I might possibly have a 1926 Exhibits Ruth. The only picture of a claimed to be 26 Exhibits that I found was from an old Lipset auction here: Link In that picture, that Ruth is also sorta blue.

I purchased my Exhibits Ruth from a Mile High auction here: Link. In that auction, the Ruth is paired with a 26 Exhibits Lazzeri, where the cert # is only 2 increments from the Ruth, so I'm assuming both cards were submitted at the same time and came from the same owner. (Unfortunately, I've since sold the Lazzeri before I realized how rare 26 Exhibits were and that this was one of this "rookie" cards.).

I've attached scans of the Ruth/Lazzeri from Mile High, the 28 Exhibits that I own, and a scan of the 26 Exhibits Ruth from the Lipset auction. The question I have is whether my 25 Exhibits Ruth is really a 1926 Exhibits Ruth, or is it possibly just a 28 Exhibits Ruth that is just a slightly different shade? Or did PSA get the flip correct, and is it indeed a 25 Exhibits Ruth? Thanks!