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option: digital display: minute, jumping hour
option: sub second
10.5''', Dm= 23.3mm, Do= 23.9mm
(winding gear, lever cock +0.5mm)
f = 18000 A/h
power reserve 32h
Balance staff U1361 / U1391 / U2497
balance with impuls finger/pin/pointed staff
Mainspring / battery
1.30 x 11.5 x 0.11mm
1.40 x 0.85mm
Comments about the data
indirect minute, hand friction clutch on barrel (Roskopf type)
almost equivalent to Würthner 10.5'''
Example, year: signature; shock device
ca. 1975: FON, Fewa Watch Co, Swiss Made, 1 Jewel - BFG 34
© R. van Rijn
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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