[ruth-gehrig]

Not exactly sure what I have here...

It's big, measuring 26" x 41".
I think I've seen similar sized player photos advertised as having originated from Yankee stadium but now cannot find the auction listings anywhere on the net.
Original photo was taken in 1927 by Nickolas Muray.
Under blacklight it does not glow.
Under magnification I see dots although some of the black portion of the photo is solid.

Does anyone know exactly what I have? Is it a photo or print? Ever seen any other similar sized stadium posters or photos?

Thanks!
Michael