Moon phase, triple calendar

1955 Henri Duvoisin watch, with moon phase and triple calendar, made in Switzerland.

 

Case composition :
Golden steel
 
Wristlet :
Leather brown, wristlet-buckle

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Caliber Venus 203, 1955, mechanical type, manual winding-mechanism, date, day, month, moon phase, size 11.5", diameter 25.60mm, high 5.10mm, ruby 15/17, vibration 18'000A/h, power reserve 40h

MHD_moon_Venus11-5_1955

Data sheet

Movement
Venus 203, 1955
Typ
Mecanical
Winding-mechanism
By hand
Functions
Date, day, month, moon phase
Size
11.5''
Movement dimensions
Diameter 25.60 mm, high 5.10 mm
Rubis
15/17
Vibration
18'000 A/h
Power reserve
40 h
Diameter of the case
33 mm
Thickness of the case
8.5 mm
Back of the watch
Steel

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