Uwersi 57/12

 
Uwersi 57/12

Uwersi 57/12

Description

After WW II, mens’ form movements were often used, but only for a short time. Among them, there is the Uwersi Caliber 5712 a probably late speciment of these movements. It uses 25 synthetic rubis, which is really very, very much. Many of the jewels are only cap jewels, some of even on position where are no gears at all (at position “7”).

The advantage of the form shape was, that a very large mainspring barrel could be used, the disadvantage is, that there was a lot of unused space, you can see on the lower left part of the movement.

Besides that, the movement uses a screw balance, which runs in rare Farr-II shock proection system, and an indirect driven center second hand. Due to the size of the movement, only a tiny date disc with small letter could be used, and there was no quickset feature for the date.

Technical data

Manufacturer:Uwersi
Caliber:57/12
Number of jewels:21
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): Farr II
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
Features:SCI,QG
Functions:hour, minute, second, day
A/h:18000
Size:8 3/4 x 12'''
Literature: Flume: 1947 49

Usage gallery

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