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stem wind and set
13 / 13.5''', Dm= 29.3 / 30.4mm
f = 17280 A/h
power reserve 35h
Balance staff U1379 / U901 / U1328
balance with impuls pin/finger/pointed staff
Mainspring / battery
Roskopf R37, 1.60 x 15.0 x 0.17mm
1.90 x 1.00mm
Comments about the data
indirect minute, hand friction clutch on barrel (Roskopf type)
Example, year: signature; shock device
1907: Louis Roskopf S.A., Swiss Made
(13''', balance with impuls finger)
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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