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View picture in original size
Fig. 1

AS 1238

Features
manual wind
sub second

Data
10.5''', Dm= 23.3mm
17 jewels
f = 18000 A/h

Balance staff U1404

Stem W1152

Mainspring / battery
Zf1309, 1.60 x 9.0 x 0.10 x 290mm

Hands
1.30 x 0.70mm

Comments about the data

Remarks
unusual: crown mechanism with rocker bar, but in some variants ratchet wheel on the back side
There are variants with click on the dial side, ratchet wheel on the back side with or without functionless crown wheel.
The assignment of these variants to the numbers 1237, 1238, 1245, 1249, 1269 is widely unknown; only the AS 1245 is known to have a ratchet wheel on the back side.

Example, year: signature; shock device
ca. 1950: AS 1237/38, Swiss Made, 17 Jewels
(AS 1237)

© M. Radaljac


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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