I’m a doubtful about the magazine being Photoplay. Bettie Page was famous for her soft-core B&D photos that went to a more disreputable magazine market.
One way to find out for sure is to check your own fantasies that might have been triggered by your first “Hmmmmm! Girls!” experiences. As the twig is bent, etc. etc. :-)
Might have been something like this;
http://www.ebay.com/itm/1955-ART-PHOTOGRAPHY-VINTAGE-MAGAZINE-BETTIE-PAGE-/201096663070?pt=Magazines&hash=item2ed24b901e
There were several “Photography” magazines that were thinly disguised girlie mags.
I took typing one semester in High School. I wasn't very good and the typing teacher suggested I not take Typing 2 for the second semester. Since there weren't many semester options I ended up taking Library Science. The librarian didn't really cotton to boys working in the library so she put me in the back room to sort magazines. It was there I discovered photography magazines. I'm sure she never looked through them or they wouldn't have been on the shelves.