Zaria 1800

Description

Probably from the 1950s is the small windup movement Zaria 1800 with its nominal size of 6 1/4 lignes (18.4 x 14.0mm).

It was produced over a longer period and during that time, the screw balance was replaced by a simple anular balance.

The construction represents the technical state of the art of the 1950s with mainspring barrel, directly driven center minute wheel, third wheel, seconds wheel and escape wheel.

As escapement, a swiss pallet lever is used.

The small screw balance, whose screws are positioned at equal distances from each other on the balance wheel rim and are therefore likely only cosmetic, already operates at 21,600 A/h. With the help of a long regulator arm, the beat rate can be precisely adjusted.

Unfortunately, there’s yet not shock protection on the Zaria 1800, which resulted in many watches, which were put with broken balance pivots into a drawer.

The dial side has the unique feature of a very specially shaped setting lever spring, which is screwed in three places and whose setting lever cannot be removed by unscrewing or pressing, but only by removing the setting lever spring itself.

The cap jewel plate for the dial-side balance bearing is clearly visible at 12 o’clock. This caliber does not have a shock protection, as indicated by the last two digits of the caliber number - “00” stands for a windup movement without shock protection and without a seconds indication.

Technical data

Usage gallery