Description
Form movements from ETA are rather rare, the last one might have been factured in the 1950ies. The caliber 2340 described here, which contains a nickel screw-balance, but is missing a shock protection, is from that time.
Technical data
| Manufacturer: | ETA | 
| Caliber: | 2340 | 
| Size: | 5 1/2 x 8 3/4''' | 
| A/h: | 18000 | 
| Number of jewels: | 15 | 
| Escapement: | Pallet lever | 
| Balance types: | Nickel screw balance | 
| Shock protection(s): | none | 
| Balance bearing / direction hairspring: | Counterclockwise | 
| Moveable stud: | no | 
| Adjust mechanism: | Long regulator arm | 
| Construction: | 
 | 
| References: | Flume: 1957 46 | 
 
    