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Fig. 2

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Fig. 3

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Fig. 4

IWC 63 12.5'''

Features
stem wind and pin set
sub second

Data
12.5''', Dm= 27.5mm, Do= 28.1mm
H= 4.7mm
(winding gear +0.15mm)
15 jewels
f = 18000 A/h
power reserve 30h

Balance staff U871

Stem W897

Mainspring / battery
1.40 x 11.0 x 0.14 x 290mm

Hands
1.30 x 0.42 / 0.18mm

Comments about the data

Remarks
1892-1907, 15000
1892-1919, 30780 (all 63)
open face calibre
bimetallic screw balance with 4 adjustment screws
Breguet hairspring
barrel with Geneva stopwork

Example, year: signature; shock device
1-2) 1901: 235486 - IWC
3-4) 1907: 381743 - IWC

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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