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11.5''', Dm= 25.6mm, Do= 26.0mm
f = 18000 A/h
power reserve 39h
Balance staff U1699
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
often or always signed as AS 1290
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.
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 1291
(AS 1380 withou calendar 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.
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