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Fig. 2

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Fig. 4

IWC 57 19'''H6.5

stem wind and pin set
sub second

19''', Dm= 41.8mm, Do= 43.2mm
H= 6.5mm
(winding gear +0.25mm)
F= 0.8mm
T= 2.4mm
15 jewels
f = 18000 A/h
power reserve 31/38h
with/without Geneva stopwork

Balance staff Ronda 1345

1.85 x 1.00 / 0.26mm

Comments about the data

1904-1909, 12700
open face calibre
bimetallic screw balance with 4 adjustment screws
Breguet hairspring
option: barrel with Geneva stopwork
patented big bearings for crown- and ratchet wheel
details cf. IWC 52 19'''H5

Example, year: signature; shock device
1-2) 1905: 343665, Mod. Déposé
2-4) 1906: 367538, M. Déposé

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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