Such a great case. I picked this watch up over the weekend. Looks like it has a recent upgrade. The case and movement doesn't match. The movement is a 21 Jewel replacement from 1937. Originally this watch would have probably had a 15 or 17 Jewel 10AN. Regardless I don't think it detracts from that awesome case. I can always source an original 10AN movement from 1931 to complete it. I believe Lisa also has one of these guys. Still unknown?
Hmm, glad I decided at the last minute not to snipe in on this one, it would not have turned out quite so favorable for either of us.....
I don't think we have anything on this one, I'm saying Unknown for now. I'm kind of regretting I didn't bid though, you have my address, right?
In reply to Hmm, glad I decided at the by Geoff Baker
Here's the one I posted a year and a half ago. The dial and hands on mine are all wrong, but the case is the same as yours. Even though flawed, I enjoy wearing it...
http://www.mybulova.com/watches/1931-unknown-5911
David