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DuRoWe 7522/4 (INT)

 
DuRoWe 7522/4 (INT) |

DuRoWe 7522/4 (INT)

Description

The copper-colored caliber 7522/4 from the Deutschen Uhrenrohwerke (DuRoWe) in Pforzheim, Germany, belongs to their last series of selfwindig movements. With the standard diameter of 11 1/2 lignes, the glucydur balance, the modern quarter rotor and the Rufa-Anti-Shock protection system, it represents the development status of the early 1970ies, when it was produced.

The only noteable fact is probably the clamp mechanism for the dial (at position 4 and 10), which allows a quick release of the dial.

Interesting detail: Among other manufactureres, OSCO used that movement, too, as you can see below. But in former years, OSCO even made their own movements.

Technical data

Manufacturer:DuRoWe
Caliber:7522/4 INT
Size:11 1/2'''
A/h:21600
Number of jewels:17
Escapement:Pallet lever
Balance types:Nickel anular balance
Shock protection(s):Rufa-Anti-Shock
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
Features:
  • SCD (direct center seconds)
  • QG (date indication (aperture))
  • RDR (date corrector)
  • AUT (selfwinding)
References:Flume: K3N1 -
Hint: The jewel count, the types of balances used, and the shock protections employed refer only to the specimens held in the archive and are therefore not relevant for the precise identification of the movement.

Usage gallery

DuRoWe 7522/4 (INT): Osco Automatic gents watch

Osco Automatic gents watch

Other movements from DuRoWe