For anyone in the Chicagoland area, I saw a really cool Jacques Lecoultre frameback with at least 1 extra blade looks really similar to this one. Sorry I didn't take pics while I was shopping, but you'll have to trust me that it was an extremely light cleanup job.

It was at the Volo Antique mall for about $95 (which is why I didn't pick it up, out of my price range). Anyone can PM me and i'll try my best to give you directions to the case where it's sitting because there are hundreds of vendors in that place.