AS 962

AS 962 | - The Movement Archive

AS 962


The speciality of the AS 962 is the giant (compared to the rest of the movement) mainspring barrel. It seems to be pretty rate, and also its shape, with a length almost twice as long as its width, is a but unusual.

AS 962: base plate

base plate

Almost all bearings, except those of the center minute wheel and the mainspring barrel, are equipped with synthetic rubies. This was pretty standard that time.

AS 962: gear train

gear train

The odd shape also results in a decentral seconds indication pretty near the center of the movement.
Besides that, the gear train consumes fre space, but is construction-wise absolut standard with directly driven center minute wheel, third wheel, decentral seconds wheel and steel escape wheel.

AS 962: side view of the gear train

side view of the gear train

The screw balance is not yet beared in shock protections. It regulates a conventional swiss pallet lever movement, and its beating frequency of 18000 A/h can be regulated with a long regulator arm and scale.

AS 962: AS 962: Dial side

AS 962: Dial side

Much place on the dial side, that’s almost all, which can be said about the AS 962.

Of course, as usual on AS movement, it uses a yoke winding system. The setting lever spring is quite large, however.

Near the lower left corner, you can see the balance wheel bearing, which only consists of a bearing- and a cap jewel. This was also standard these days.

Technical data

Size:6 3/4 x 12''' (measured: 15,0 x 24,5mm)
Number of jewels:15
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): none
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:4 hole(s)
  • s (decentral seconds)
References: Werksucher: Jacob 1942 32
Inventory number:20007

Usage gallery

AS 962: Erka gents watch  (case missing)

Erka gents watch (case missing)