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13''', Dm= 29.0mm, Do= 29.4mm
(winding gear +0.1mm)
f = 18000 A/h
Balance staff U1741
Mainspring / battery
2.10 x 11.5 x 0.13mm
1.50 x 0.890 / 0.19mm
Comments about the data
330: center-wheel bearing in train bridge
331: center-wheel bearing in barrel bridge
Example, year: signature; shock device
1948: 1, F, Certina, KF 330, Swiss Made, 15 Jewels - K.F. 330
(Certina 330, bridge ayout cf. Certina 321)
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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