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manual-wind chronograph, 60s, 30/45min, pillar wheel
13''', Dm= 29.5mm
f = 18000 A/h
Balance staff U1903 / U3470
for balance with/without screws
Mainspring / battery
Zf1253, 1.50 x 12.0 x 0.14 x 360mm
1.80 x 1.20 x 0.26 / 0.26 x 0.24mm
Comments about the data
swivel pinion after Edouard Heuer's patent from von 1886
ratchet on dial side, crown mechanism with rocker bar
Example, year: signature; shock device
1-2) ca. 1950: COW, 380, C 3112, Croton Watch Co Inc, Swiss, 17 Jewels
3-4) ca. 1955: - ; Antichoc-102
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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