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stem wind and set
16''', Dm= 35.7mm, Do= 36.5mm
f = 18000 A/h
Balance staff U2668
Mainspring / battery
Zf1416, 1.70 x 13.0 x 0.18 x 330mm
1.50 x 0.95 / 0.22mm
Comments about the data
open face calibre
51L: open face calibre
51S: hunter calibre
suffix I: meaning unknown
Example, year: signature; shock device
ca. 1935: - G.W.Co (General Watch Co), 51L, I
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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