Sonceboz ?

 
Sonceboz ?

Sonceboz ?

Description

This 12 3/4 line movement, which is characterized by its high-quality execution, unfortunately cannot be clearly assigned to any manufacturer.

Only the shape of the setting lever spring could be a vague indication for Sonceboz.

base plate

base plate

In this richly decorated movement, of course are all the important bearings are equipped with rubies. In the visible area, i.e. below the balance wheel, under the lever, escapement wheel and fourth wheel is a very fine perlage applied.

gear train

gear train

The gear train is built in a very classic way: The center minute wheel is directly driven by the mainspring barrel, followed by third wheel, decentralized seconds wheel at 6 o’clock with an extended axis on the dial side and finally the steel escape wheel.

side view of the gear train

side view of the gear train

The naturally not yet shockproof monometallic screw balance beats with 18000 A/h and regulates a swiss pallet lever movement.

The exact frequency can be adjusted with the help of a long regulator arm.

Dial side

Dial side

The movement is also perlaged on the dial side.

The yoke winding system as got a very characteristically shaped setting lever spring, but in none of the available movement catalogs, a movement with a similar setting lever spring could be found.

Unfortunately, the serial number, 99901, does not help with identification either.

Technical data

Manufacturer:unknown
Caliber:Sonceboz?
Size:12 3/4''' (measured: 28,85mm)
Number of jewels:15
Escapement:Pallet lever
Balance types: monometallic screw balance (two legs)
Shock protection(s): none
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
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:2 hole(s)
Features:
  • s (decentral seconds)
Inventory number:22005