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View picture in original size
Fig. 1

View picture in original size
Fig. 2

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Fig. 3

View picture in original size
Fig. 4

AS 1380

manual wind
sweep second
date hand: set by pusher at 4h
month: only set by pusher at 2h

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.0mm
F= 2.15mm
T= 3.1mm
17 jewels
f = 18000 A/h
power reserve 39h

Balance staff U1699

Stem W1229

Mainspring / battery
Zf1467, 1.80 x 8.0 x 0.10 x 225mm

2.20 x 1.30 x 0.90 x 0.20mm

Comments about the data

calendar mounted as module on base movement (Fig.3, 4)
base movement often or always signed as AS 1291
A wheel between barrel and minute pinion allows to place center-second wheel and barrel in the same layer, and thus, regarding former conditions, a rather thin base movement (3.5mm), despite the sweep second. The changed revolution direction of the barrel makes an additional wheel in the winding gear necessary.

1290: -
1291: date hand
1349: day, date
1380: day, date hand, month
1510: for strongly domed dial

Example, year: signature; shock device
ca. 1950: Steelco, Swiss, 17 Jewels - AS - AS 1291 (under module)

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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