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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Cyma 17'''10 Pleiade

stem wind and set
sub second

17.5''', Dm= 39.3mm
H= 3.75mm
15/17/20 jewels
f = 18000 A/h
power reserve 31h

Balance staff Ronda 2310

Stem W1762

1.80 x 1.10 / 0.22mm

Comments about the data

open-face or hunter calibre
Breguet hairspring
An intermediate wheel between minute pinion and the rest of the train allows a low profile without reducing the sturdiness.
The arrangement of the now four train bearings according to the four brightest stars of the constellation Pleiades gave the calibre its name.
option: Chronometer certificate Neuchatel Observarory
differences not known between 17'''10, 700-703, 7521

17'''10: open-face or hunter
700, 702: hunter
701, 703, 7521: open-face

Example, year: signature; shock device
ca. 1910: - 6902357
(open face)

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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