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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

View picture in original size
Fig. 4

Alpina 18'''

stem wind and set
sub second

18''', Dm= 40.05mm, Do= 40.8mm
H= 6.3mm
F= 0.7mm
T= 2.4mm
15 jewels
f = 18000 A/h
power-reserve 35h

Mainspring / battery
Zf3641, 2.20 x 16.0 x 0.20 x 460mm

1.70 x 1.02 / 0.30mm

Comments about the data

open face calibre
bimetallic screw balance
Breguet hairspring
lever and escape wheel anodized aluminium
early two-section regulator for coarse and fine adjustment (Fig.3)
two-part crown wheel with big bearing (Fig.4)
steel bearing for stem (Fig.4)
attention: left handed ratchet-wheel screw
ebauche or even finished movement from Recta

Example, year: signature; shock device
ca. 1910: UH (Union Horlogère)

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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