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date: set by changing 21:30-24h
11.5''', Dm= 25.6mm
f = 18000 A/h
power reserve 45h
Balance staff U2621 / U2957
balance with/without screws
Mainspring / battery
Zf1326, 1.60 x 10.5 x 0.12 x 320mm
1.30 x 0.90 x 0.21mm
Comments about the data
different bridge shapes (cf. FHF 73-4)
differences not known between 74-4, 745-4
74, 741, 745: -
74-2: date mounted on plate
74-4, 745-4: date integrated in plate
suffix N: minor modifications date
Example, year: signature; shock device
ca. 1960: Arsenal, Swiss Made, 17 Jewels; 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.
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