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stem wind and set
18.5''', Dm= 41.25mm, Do= 42.6mm
f = 18000 A/h
power reserve 30h
Balance staff Ronda 1247 (?)
2.00 x 1.10 / 0.28mm
Comments about the data
monometallic screw balance, Breguet hairspring
same mounting dimensions and similar design like Buser 18.5'''
but still no common parts
Example, year: signature; shock device
ca. 1925: Drusus ***
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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