Osco 52

Osco 52 | 17jewels.info - The Movement Archive

Osco 52


This rather small and old movement from the manufactury of Otto Schlund in Pforzheim is already equipped with a direct driven center second hand and a shock protection system. Nice to see is the screw balance and the long regulator for the hairspring. Not so nice is the simple rocking bar mechanism.

Osco 52: Osco 52 dial side

Osco 52 dial side

Technical data

Size:8 3/4 x 10'''
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): ?
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
  • lever
  • escape wheel, seconds wheel, third wheel, mainspring barrel
  • center minute wheel
Winding mechanism:rocking bar winding system
Setting lever spring:3 hole(s)
  • SCD (direct center seconds)
References: Flume: 1952 36

Usage gallery

Osco 52: Osco Parat gents watch

Osco Parat gents watch

Osco 52: ZentRa ladies' watch

ZentRa ladies' watch