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View picture in original size
Fig. 1

FHF 641-2

Features
manual wind
sweep second
date: set by changing 20-24h

Data
8.75''', Dm= 19.4mm, Do= 19.7mm
17 jewels
f = 18000 A/h
power reserve 41h

Balance staff U2279

Stem W2397

Mainspring / battery
Zf928, 1.35 x 7.5 x 0.08 x 250mm

Hands
1.20 x 0.70 x 0.21mm

Comments about the data

Remarks
differences not known between 64-2, 641-2

family/generations:
64, 641, 642: -
64-2, 641-2: date
suffix N: minor modifications date

Example, year: signature; shock device
ca. 1955: Swiss, 17 Jewels . FHF 64; Incabloc
(FHF 64)

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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