Geneva Sport 230

Geneva Sport 230 | - The Movement Archive

Geneva Sport 230


The movement shown here is stamped as “SYW 230”, which is completely unknown to the literature. A colleague identified it as “Geneva Sport 230”.

Geneva Sport 230: SYW 230 Logo

SYW 230 Logo

This movement with a diameter of 10 1/2 lignes is made in standard quality and represents the technical state of the early fifties.

The (unfortunately!) not shock protected balance with screws, whose hairspring is fix connected to the balance cock and can only be regulated in its effective length directly by the hairspring key, controls a traditionally constructed pallet lever movement. On this movement, the minute gear does not run in lewelled bushings, but the escapement wheel has got two deck jewels, which leads to a total of 17 jewels in this movement.

The SYW 230 has got a decentral second hand as “6” and besides this only displays hours and minutes.

Geneva Sport 230: base plate

base plate

On the dial side, there are no surprises, only the setting lever spring is of an unusal shape, which makes it even more surprising, that this movement is not shown on any of the Flume Werksucher. Because of this, it can’t be identified with 100% certaincy.

Geneva Sport 230: Geneva Sport 230 dial side

Geneva Sport 230 dial side

Technical data

Manufacturer:Geneva Sport
Size:10 1/2'''
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): none
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Hairspring key
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:4 hole(s)
  • s (decentral seconds)

Usage gallery

Geneva Sport 230: Cornavin Geneve gents watch

Cornavin Geneve gents watch

The specimen shown here could be repaired thanks to a spare parts donation from Dusan. Thank you very much for your kind donation!