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stem wind and pin set
20''', Dm= 44.45mm, Do= 45.25mm
(ratchet.wheel bridge +0.9mm)
f = 18000 A/h
Mainspring / battery
2.40 x 17.0 x 0.20mm
1.64 x 0.62 / 0.30mm
Comments about the data
open face calibre
bimetallic screw balance
lever with counter weight and hidden pallets
Kathleen H. Pritchard assigns the signature Dubois et Cie. Genève of the watch to Philippe Dubois & Fils Le Locle, today DuBois & Fils. The silver hallmark from Le Locle (head office) is another indicator.
Example, year: signature; shock device
ca. 1880: - 32 5 38
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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