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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

Alpina 157 (Marc Favre 768)

Features
manual wind
sub second

Data
8.75 x 12.5''', Dm= 19.8 x 28.15mm
H= 4mm
15 jewels
f = 18000 A/h
power reserve 41h

Balance staff U1930

Stem W2123

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

Hands
1.22 x 0.70 / 0.16mm

Comments about the data

Remarks
1925-
Alpina Gruen Gilde 1929-1937
bimetallic screw balance
straight lever (ligne angulaire)
stem mechanism without setting-lever spring

Swiss Patent 110319:
filed 09-12-1924, Marc Favre & Co., Bienne (CH)
US Patent 1708610:
filed 08-21-1925, Marc Favre & Co., Bienne (CH), Inhaber: Gruen Watch Co., Cincinnati (USA)
placement of the rear 4th wheel bearing beneath the balance, to make space for a big balance
Both patents show and describe precisely the calibre listed here, which was applied by Alpina, Gruen, and Marc Favre. Thus Marc Favre is surely the designer, likely also the maker.

Example, year: signature; shock device
ca. 1935: 157, 157 - D 172, Brevet+

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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