PUW 74

 
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PUW 74

Description

The PUW caliber 74 is a common ladies’ watch form movement with a size of 5 12 lignes. It was the successor of the PUW 73.

Video on YouTube

The only difference between the PUW 73 and 74 is, that the latter one has got a moveable hairspring stud for adjusting the beat error of the balance.

Everything else remained unchanged, the beat rate (18000 A/h), the number of jewels (17, with non ruby-beared minute wheel and cap jewels for the escapement wheel bearings) and the escapement system (swiss pallet lever).

The three leg annular balance is of course shock protected, in the specimen shown here for example in two KIF Ultraflex bearings.

PUW 74 dial side

PUW 74 dial side

On the dial side, you see the yoke winding system (identical to its predecessor) as well as the cap jewel of the escapement wheel bearing (at 9 o’clock) and one of the two KIF Ultraflex shock protection bearings.

Technical data

Manufacturer:PUW
Caliber:74
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): KIF Ultraflex
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
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:3 hole(s)
Functions:hour, minute
A/h:18000
Size:5 1/2'''
Literature: Flume: K3 77

Usage gallery

Dugena ladies' watch

Dugena ladies' watch

Many thanks go to G.Müller for the donation of that movement and watch!