Description
A nicely decorated swiss lever movement is the Unitas caliber 531 (or probably another one from the caliber series Unitas 530). As you can see, it is a very old form movement, one of the first ladies’ anchor form movements.
Technical data
Manufacturer: | Unitas |
Caliber: | 531 |
Size: | 5 1/4''' |
A/h: | 18000 |
Number of jewels: | 15 |
Escapement: | Pallet lever |
Balance types: |
Nickel anular balance |
Shock protection(s): |
none |
Balance bearing / direction hairspring: | Counterclockwise |
Moveable stud: | no |
Adjust mechanism: | Hairspring key |
Construction: |
|
Winding mechanism: | yoke winding system |
Setting lever spring: | 3 hole(s) |