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View picture in original size
Fig. 1

View picture in original size
Fig. 2

AS 581

Features
stem wind and set
sub second

Data
18''', Dm= 39.7mm, Do= 40.55mm
H= 5.5mm
F= 0.6mm
T= 2.2mm
10/15 jewels
f = 18000 A/h
power-reserve 32h

Balance staff U1045

Stem W1544

Mainspring / battery
Zf3495, 2.00 x 16.0 x 0.20 x 460mm

Hands
1.80 x 0.50 / 0.32mm

Comments about the data

Remarks
unusual: crown mechanism with rocker bar, but ratchet on back side
crown wheel without function
different bridge shapes in 579, 581

family:
220, 283: long click spring
579, 581: click spring under ratchet wheel

Example, year: signature; shock device
ca. 1925: Swiss Made
(Fig.2)

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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