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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Gruen 381

Features
stem wind and set
sub second

Data
16.75''', Dm= 37.8mm, Do= 38.4mm
H= 4.4mm
F= 2.2mm
T= 2.6mm
15 jewels
f = 18000 A/h
power reserve 34h

Balance staff Ronda 1168

Hands
1.60 x 0.95 / 0.21mm

Comments about the data

Remarks
1939-
open face calibre
Breguet hairspring
stem mechanism without setting-lever spring

family:
380: 16.75''', 17 jewels
381: 16.75''', 15 jewels
385: 17.5''', 17 jewels
386: 17.5''', 15 jewels

Example, year: signature; shock device
1946: 4-183057, GXC, Gruen Watch Co. Precision, Veri-Thin, Conoruma, Switzerland, 17 Jewels - *
(Gruen 380)

Not for Sale!
The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft


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