Technical data
| Manufacturer: | UMF | 
| Caliber: | 39-22 (32-12) | 
| Size: | 8 3/4''' | 
| A/h: | 18000 | 
| Number of jewels: | 17 | 
| Escapement: | Pallet lever | 
| Balance types: | Nickel anular balance | 
| Shock protection(s): | Antichoc 102 | 
| Balance bearing / direction hairspring: | Clockwise | 
| Moveable stud: | no | 
| Adjust mechanism: | Hairspring key | 
| Construction: | 
 | 
| Features: | 
 | 
| References: | Flume: K3 17 | 
