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View picture in original size
Fig. 1

View picture in original size
Fig. 2

AS 687

manual wind
sub second

8.75''', Dm= 19.5mm, Do= 19.7mm
H= 3.3mm
15 jewels
f = 18000 A/h
power reserve 33h

Balance staff U57

Stem W138

Mainspring / battery
Zf570, 1.15 x 7.5 x 0.09 x 220mm

1.20 x 0.65mm

Comments about the data

bimetallic screw balance
identification uncertain because it has no setting-lever spring.
But also other AS calibres are known with and without setting-lever spring.
differences not known between 612, 632, 664, 669, 687

Example, year: signature; shock device
ca. 1925: - 078
(AS 612)

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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