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Fig. 1

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Fig. 2

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Fig. 3

AM 381 (Felsa 381)

Features
automatic
sub second

Data
8.75''', Dn= 19.74mm
H= 5.15mm
T= 1.7mm
17 jewels
f = 18000 A/h
power reserve 32h

Balance staff U1502

Stem W1211

Mainspring / battery
Zf912, 1.35 x 6.5 x 0.07 x 220mm

Hands
1.20 x 0.60 / 0.18mm

Comments about the data

Remarks
1942-
first ladies calibre with bidirectional rotor winding,
design equvalent to the gents calibre Felsa 410, which was only produced in 1942
detached manual wind
differences not known between 380, 381

family:
380, 381: 8.75'''
382: 9.75'''

Example, year: signature; shock device
ca. 1950: Ernest Borel, Bidynator, Patented, Swiss Made, 17 Jewels - Felsa 382; Incabloc
(Felsa 382, 9.75''')

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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