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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Bifora 84

Features
manual wind
sub second

Data
8.75''', Dm= 19.4mm, Do= 19.8mm
H= 3.3mm
F= 0.4mm
T= 1.5mm
15 jewels
f = 18000 A/h
power-reserve 36h

Balance staff U335 / U336
balance collet 0.74 / 0.84mm

Stem W313

Mainspring / battery
Zf833, 1.30 x 7.5 x 0.08 x 245mm

Hands
1.23 x 0.65 / 0.18mm

Comments about the data

Remarks
1933-1956 (84, 84/1)

family/generations:
84: sub second
84(SC): sweep second
stronger mainspring:
84/1: sub second
84/1(SC): sweep second
redesign:
85: sub second
85(SC): sweep second

Example, year: signature; shock device
ca. 1940: - Bifora 84, 1
(Bifora 84/1)

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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