This is a NOS G. Beguelin Automatic Watch Case Dial & Hands for Felsa 692 Bidynator.

This is a vintage G. Beguelin salesman’s sample watch with no movement.

Case is 34mm without crown.

If you have a good Felsa 692 Bidynator movement you could build a mint watch.

Seems like the Felsa 692 is widely available at modest prices.