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8.75''', Dm= 19.35mm, Do= 19.7mm
f = 18000 A/h
power reserve 38h
Balance staff U2066 (L= 2.87mm)
Mainspring / battery
Zf647, 1.20 x 7.5 x 0.07 x 280mm
1.20 x 0.750 / 0.15mm
Comments about the data
option: bimetallic screw balance
differences not known between 834, 836
The designation 835 was later used for an automatic calibre.
814, 816: 3 train cocks
834, 836: 2 train cocks
all escapement parts differing:
814a, 816a: 3 train cocks
834a, 836a, 182: 2 train cocks
Example, year: signature; shock device
ca. 1930: 72896, Ref.816, Tavannes Watch Co, Patented
(Cyma 816, 3 cocks)
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.
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