Hey guys! I picked this up for a song and a dance a while back at a garage sale. It "feels" like it winds, but does not run. My local watch maker quoted me upwards of $400 to repair a broken mainspring, so it's just been sitting in a draw. Any ideas on what it might be? Right now it's just kind of a showpiece but it would be great to get it working again. I found a little bit of info on the Arthur Thomas Co and they apparently sold high precision scientific equipment out of Philly in the early 1900s. Cosmetically it's in great shape with an incredibly clean crystal (replacement?) and crisp dial. Hands look to be blued steel.