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stem wind and set
19''', Dm= 41.85mm
f = 18000 A/h
power reserve 32h
Balance staff U972
Mainspring / battery
Zf3706, 2.30 x 16.0 x 0.20 x 460mm
1.85 x 1.10 / 0.27mm
Comments about the data
open face calibre
early samples with bimetallic screw balance
like 526, but different barrel
differences not known between 528, 536
Example, year: signature; shock device
ca. 1940: Cortebert; Incabloc
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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