I just picked up an archtop around the same age (I have a thread about it somewhere here) that I'm fixing up. Hence my question/comment.

Aren't 13's considered "medium" when it comes to Archtops?
Are those strings phosphor bronze, or regular nickel strings?

I've ordered a couple of sets of 13-56 phosphor bronze strings to get my Alver up and running, so hopefully that was the right choice! (I've read phosphor bronze strings aren't great for use with a pickup, but mine doesn't have a pickup (yet) so I'll see how it all goes.)

Awesome score! I thought mine was in good condition for it's age, but your's is MINT! I think this is the start of thefret's vintage archtop revolution!