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View picture in original size
Fig. 1

View picture in original size
Fig. 2

AS 1003

Features
manual wind
sweep second

Data
8.75''', Dm= 19.4mm, Do= 19.7mm
H= 4.3mm
F= 0.5mm
T= 1.7mm
7/15/17 jewels
f = 18000 A/h
power reserve 45h

Balance staff U536

Stem W138

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

Hands
1.20 x 0.85 x 0.36mm

Comments about the data

Remarks
option: bimetallic screw balance
also without separate escape-wheel cock
often or always signed as AS 970
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.
differences not known between 1003, 1018, 1126

family/generations:
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. 1940: M, Swiss Made, 17 Jewels - AS 970

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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