$50, that's a good deal. It looks good from the photos you've shown. The movement looks clean, and I can see it's running. The crown looks appropriate for the time period but I'm not no expert on 30s crowns. The case shows heavy brassing. The dial looks mostly okay from the photo. There's a spot that looks like the minute track may have been touched up between the 5 and 7. The hands look like they are original to me. It would be good if you could provide a photo of the dial and hands out of the case.