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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Bifora 8.75''' (Felsa 107)

manual wind
sub second

8.75''', Dm= 19.45mm, Do= 19.75mm
H= 3.3mm
F= 0.45mm
T= 1.6mm
16 jewels
f = 18000 A/h
power reserve 33h

Balance staff U36

Stem W137

Mainspring / battery
Zf662, 1.20 x 7.5 x 0.09 x 220mm

1.20 x 0.70 / 0.20mm

Comments about the data

bimetallic screw balance
transition from old Felsa 107 (without set-lever spring) to the new (big crown-wheel bearing)
The escape-wheel cap jewel was probably added by Bifora.

Example, year: signature; shock device
ca. 1925: -

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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