Würthner 10 1/2

 
Würthner 10 1/2

Würthner 10 1/2

Description

The 10 12 ligne, unmarked and not having a caliber number, Würthner movement (in the literature, it is known as “Würthner 10 12”) is a simple constructed pin lever movement, which is made in a similar construction as compareable movements of Baumgartner or Brac. The only essential difference is, that the Würthner movement has got one additional transmission gear.

The plates are probably made of nickel silver and carry a pin lever movement in pillar construction according to Roskopf watches with an indirectly driven minute hand on the dial side and a large mainspring barrel.

The small ring balance is not shock protected and runs in two steel bearings. The only one jewel used is in the ellipse of the balance.

On the dial side, as a little surprise, you find a yoke winding system, which is again a very simple, but efficient construction.

This movement, which is made in the late 1950ies, is pretty rare, probably because of too many similar and cheap(er) pin lever movements of other german and swiss manufacturers.

modern version

modern version

The movement was reworked over the time, the younger version was also noted as “OC Cal. R 1”, but differs at least in size from the other movement, which I know as OC Cal. R 1. Nevertheless, it seems, like they are from the same family.

Wuerthner 10 1/2 dial side

Wuerthner 10 1/2 dial side

dial side, modern version

dial side, modern version

Technical data

Manufacturer:Würthner
Caliber:10 1/2
Number of jewels:0/1
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:no
Adjust mechanism:Long regulator arm / hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, large driving wheel, mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:1 hole(s)
Features:s
Functions:hour, minute, decentral second
A/h:18000
Size:10 1/2'''
Literature: Flume: 1957 39

Usage gallery

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