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Fig. 6

AS 1749

sweep second
date: set by changing 20:20-24h

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.6mm
F= 1.1mm
T= 1.9mm
17/21/25 jewels
f = 18000 A/h
power reserve 42h

Balance staff U3115

Stem W3076

Mainspring / battery
Zf509, 1.10 x 10.5 x 0.12 x 320mm

1.50 x 0.90 x 0.21mm

Comments about the data

indirectly driven minute allows a big balance and low profile

18000 / 21600A/h / quick-set respectively:
manual wind:
1746/1880: -
1747/1881/1981: date
1748/1882: -
1749/1883/1983: date
1798/1892: ball bearing
1799/1893/1993: date, ball bearing
1824/1886/1986: day/date
1825/1885/1985: day/date, 13.75'''
1826/1896/1996: day/date, ball bearing
1827/1895/1995: day/date, ball bearing, 13.75'''

Example, year: signature; shock device
1-3) ca. 1965: AS 1748/49, Swiss, 21 Jewels - UT; Incabloc
4-6) ca. 1960: AS 1748/49, Swiss, 25 Jewels; Monorex

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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