Shanghai ZSE

 
Shanghai ZSE

Shanghai ZSE

Description

The chinese ZSE was part of the first incarnation of the “First National Standard Movement”, the first standardized mens’ watch movement. It was made between 1972 and 1974, before it was superseded by the million-seller ZSH series.

The construction is very traditional and easy serviceable - the large four-leg ring balance contains a thick and rugged (hard to break accidentially) hairspring, which is connected to a moveable hairspring stud and whose effective length can be regulated directly on the hairspring key. The balance beats with 21600 A/h and is shock proctected. The shock protection system is made in China and its springs were available in many different shapes, starting from an Incabloc-like type to a “four leaf clover”. On this specimen, a heart-like spring was used.

Shanghai ZSE side

Shanghai ZSE side

On the dial side, there are no surprise and of course, this movement uses a yoke winding system.

Technical data

Manufacturer:Shanghai
Caliber:ZSE
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): China (different types)
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel
  • mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:3 hole(s)
Features:SCD
Functions:hour, minute, second
A/h:21600
Size:11 1/4''' (measured: 25,25mm)
Production period:1972-1974
Literature: Flume: -

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