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8.75 x 9.75''', Dm= 19.45 x 22.0mm
f = 18000 A/h
power reserve 37h
Balance staff U1737
Main spring / battery
1.18 x 8.5 x 0.105 x 250mm
~Zf665, 1.20 x 8.5 x 0.095 x 265mm
1.22 x 0.66 / 0.16mm
335: 17 jewels
335-21: 21 jewels
335R: 21/23 jewels, Incabloc
335N: 21/23 jewels, plate optimized for Incabloc
430: 17 jewels, fake separate escape-wheel cock
431: 15 jewels
435: 17 jewels
440: 17 jewels, Curvex, curved back surface
Example, year: signature; shock device
ca. 1945: GXC, 612095, Gruen Watch Co, Precision, Switzerland, Veri-Thin Patented, 17 Jewels
Comments about the data
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. The features and technical data were mostly taken from movements, which were investigated on the occasion of sale, service, or repair. As the accordant watches are no longer available, further data can't be given on request.
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