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View picture in original size
Fig. 1

View picture in original size
Fig. 2

FHF 731

Features
manual wind
sweep second

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.0mm
F= 1.5mm
T= 2.1mm
17/21 jewels
f = 18000 A/h
power reserve 42h

Balance staff U2443 / U3143
balance with/without screws

Stem W2417

Mainspring / battery
Zf1062, 1.40 x 10.5 x 0.12 x 320mm

Hands
1.30 x 0.90 x 0.21mm

Comments about the data

Remarks
differences not known between 73, 731, 733, 735

family/generations:
73, 731, 733, 735: -
73-2: date mounted on plate
73-4, 735-4: date integrated in plate
suffix N: minor modifications date

Example, year: signature; shock device
ca. 1960: Venus, Swiss Made, 17 Jewels - D0, FHF 73; Shock-Stabil
(FHF 73)

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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