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|Dugena 1209 (Helvetia 133, ETA 2413)|
6.75''', Dm= 15.3mm, Do= 15.55mm
f = 21600 A/h
power reserve 41h
Balance staff U2980
Mainspring / battery
1.40 x 6.5 x 0.07mm
1.20 x 0.60mm
Comments about the data
escapement and barrel from Helvetia
indirectly driven minute allows a very big balance
differences not known between 1207, 1209
Example, year: signature; shock device
ca. 1965: Helvetia, Swiss Made, 17 Jewes - 3790, Patented; Incabloc
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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