Sefea 50
Description
The Sefea 50 is a 11 1/2 ligne manual wind movement from France, which was already available by the former manufacturer as Judex 50.
base plate
The base plate already shows, that we have a very common construction here: Directly driven center minute wheel, directly driven center second wheel, pallet lever escapement and fully jeweled bearings.
gear train
The annular balance is beared in two Incabloc shock protection systems and beats slowly with 18000 A/h and controls a conventional swiss lever movement.
gear train, side view
The specimen shown here uses even 21 jewels, since the escapement wheel, center second wheel and third wheel are equipped with cap jewels, and on the dial side, even the lever bearing has got a cap jewel, which is not neccessiary at all, since the lever bearing runs oil-free.
Sefea 50 dial side
Technical data
| Manufacturer: | Sefea |
| Caliber: | 50 |
| Size: | 11 1/2''' (measured: 25,6mm) |
| A/h: | 18000 |
| Number of jewels: | 21 |
| Escapement: | Pallet lever |
| Balance types: |
anular balance |
| Shock protection(s): |
Incabloc |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | no |
| Adjust mechanism: | Hairspring key |
| Construction: |
|
| Construction type: | solid construction |
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 2 hole(s) |
| Features: |
|
| References: |
Flume: K3 37 (K2 9) |
Usage gallery
Countess mens' watch (only dial survived)