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View picture in original size
Fig. 1

AS 1726

manual wind
sub second

8.75''', Dm= 19.4mm, Do= 19.7mm
H= 3.45mm
F= 0.5mm
T= 1.7mm
17 jewels
f = 21600 A/h
power reserve 45h

Balance staff U594

Stem W138

Mainspring / battery
Zf1298, 1.60 x 7.5 x 0.08 x 250mm

1.20 x 0.65 / 0.18mm

Comments about the data

The movements of this family were made with different balances, partially with the same, partially with different calibre designations. Catalogues differ regarding the differences, but these are small enough to interchange the parts.
Attention, there are equally looking calibres with H= 3.0mm

18000 A/h, 1st balance, plate and bridges plane, :
970, 980, 987, 999, 1014, 1036, 1047, 1056, 1090, 1210, 1217, 1251, 1254, 1276, 1375, 1386: sub second
1003, 1018, 1126: sweep second
1359: sub second, date
18000 A/h, 2nd balance, edges bevelled:
970 III, 1354, 1376, 1556: sub second
1156: sub second, no mounting flange
1159: sweep second
21600 A/h, 2nd balance:
1726: sub second, plate and bridges plane
1727, 1828: sub second, edges bevelled

Example, year: signature; shock device
ca. 1965: Roamer, 17 Jewels Swiss; Incabloc
(AS 1727, refined and applied 2004)

© U. Thiele

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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