MST 6

Description

The 18 ligne cylinder movement MST 6 dates probably from the 1920, is partially already modern constructed, but in other details hopelessly outdated.

You’ll hardly find any jewels on this simple pillar movement, as there’s only one single ruby used, at the position, where it is the best visible, as cap jewel for the upper balance wheel bearing.

All other pivots are beared in simple drillings in the brass plate.

The gear train is that of a cylinder movement, which was in the 1920s very much outdated.
It consists of the mainspring barrel, center minute wheel, third wheel, seconds wheel at 6 o’clock and finally the cylinder wheel made of steel.

We have the common three-leg screw-less anular balance, not shock protected, which most probably beats with 18000 A/h.

Át least, there’s a little decoration of the balance wheel cock, as well as a scale for the long regulator arm, with which you can adjust the effective length of the hairspring to adjust the beating rate as good as possible.

On the dial side, you see the pretty modern rocking bar keyless works with crown switch and a well executed ratchet.

Unfortunately, there’s no ruby bearing or cap jewel for the balance wheel, only a simple drilling and instead of the cap jewel, there’s a metal plate.

Technical data

Usage gallery