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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Bifora 103(AUT, new)

Features
automatic
sub second

Data
13''', Dm=Do= 29.0mm
H= 6.65mm
T= 1.7mm
15-22 jewels
f = 18000 A/h
power reserve 33h

Balance staff U1427

Stem W2235

Mainspring / battery
Zf1213, 1.50 x 9.5 x 0.10 x 320mm

Hands
1.23 x 0.66 / 0.20mm

Comments about the data

Remarks
1951-1954 (old and new)
first German automatic calibre
detached manual wind
option: pin-gold plated

family/generations:
103 : manual wind, sub second
103(SC): manual wind, sweep second
103(AUT): automatic 3 transmission wheels, sub second
103(AUT, new): automatic 2 transmission wheels, sub second

Example, year: signature; shock device
1-2) 1952: Bimag Automatic, B, Pat. Ang. - B 103; Super-Shock-Resist
(early sample, still with 10.5''' base plate and 13''' mounting ring)
2-3) 1952: Bimag Automatic, B, Pat. Ang. - B 103; Super-Shock-Resist
(13''' base plate)

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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