Here's what a pair of pre-war magnas should look like. (Note the curved line below the medallion.)
Another check is to pull the panels and look at the backing button. It should be a concave aluminum disk that looks like it was turned on a lathe.
Also, I don't know if it is a trick of the light, but the OP's grip looks like it is missing a big splinter from just behind the front strap...... (The side of the frame looks exposed..)
