after doing some more searching, i would say you have one of these but maybe a few years later...notice the same logo inlay, the dot fret markers and same tortoise pick guard
Retrofret - Gibson L-50 Arch Top Acoustic Guitar , c. 1935 - Brooklyn, NY
the only thing different that i can tell is that yours has nickel tuners and the one in the link has plastic tuners...yours could be original or replacement as the plastic ones sometimes shrink or break over the years.
so, my guess is definitely a 1940's L50, probably all original.