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View picture in original size
Fig. 1

View picture in original size
Fig. 2

AS 1673

sweep second

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.5mm
F= 1.3mm
T= 2.0mm
17/21/25 jewels
f = 18000 A/h
power reserve 40h

Balance staff U2645 / U3139
for balance with/without screws

Stem W2827

Mainspring / battery
Zf674, 1.20 x 9.0 x 0.10 x 290mm

1.50 x 0.90 x 0.20mm

Comments about the data

rotor placed out of center
The winding gear is integrated in the movement, instead of attaching it to a manual-wind calibre as usual. This led to a sensationally thin movement at that time.
detached manual wind

bronze-bearing rotor:
1656: 11.5''', flat
1673: 11.5''', height like date version
1674: 11.5''', date
1675: 13''', flat
1678: 13''', date
ball-bearing rotor:
1695: 11.5''', flat
1739: 11.5''', height like date version
1740: 11.5''', date

Example, year: signature; shock device
ca. 1955: Swiss; 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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