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stem wind and set
18.5''', Dm= 41.0mm, Do= 41.75mm
f = 18000 A/h
Mainspring / battery
Zf3487, 2.00 x 15.5 x 0.19 x 450mm
1.82 x 0.65 / 0.28mm
Comments about the data
hunter or open face calibre
stem mechanism without setting-lever spring
attention: left handed ratchet-wheel screw
option: bimetallic screw balance, Breguet hairspring
Example, year: signature; shock device
ca. 1915: C, M - 341389
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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