Junghans J99/1 (699.71)

 
Junghans J99/1 (699.71)

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

Junghans J99/1 dial side

Technical data

Manufacturer:Junghans
Caliber:J99/1
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:
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel, mainspring barrel
Winding mechanism:rocking bar winding system
Setting lever spring:2 hole(s)
Functions:hour, minute
A/h:18000
Size:6 3/4 x 8 1/2'''
Literature: Flume: 1957 48

Usage gallery

Junghans ladies' watch

Junghans ladies' watch