Junghans J99/1 (699.71)
Description
In the 1950ies, Junghans produced the caliber J99/1, which bases on the caliber J99 but contains an inhouse shock protection system.
This form movement in ladies’ size is a bit bellied, still uses 15 jewels and contains a swiss pallet anchor escapement.
It has got a rather cheap rocking bar winding mechanism below the dial - a detail found on many cheaper pallet anchor watches of the fifties. Technically a yoke winding mechanism is more elaborated and long lasting and can be easier maintained, but on the rocking bar mechanism used here, there’s a helpful detail: The click spring can be moved away without removing the detail, thus allowing the watchmaker to release the mainspring.
Junghans J99/1 dial side
Technical data
| Manufacturer: | Junghans |
| Caliber: | J99/1 (699.71) |
| Size: | 6 3/4 x 8 1/2''' |
| A/h: | 18000 |
| Number of jewels: | 15 |
| Escapement: | Pallet lever |
| Balance types: | Nickel anular balance |
| Shock protection(s): | Junghans |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | no |
| Adjust mechanism: | Long regulator arm |
| Construction: |
|
| Winding mechanism: | rocking bar winding system |
| Setting lever spring: | 2 holes |
| References: | Flume: 1957 48 |
Usage gallery
Junghans ladies' watch