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Fig. 1

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Fig. 2

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Fig. 3

Minerva 9

stem wind and set
sub second

19''', Dm= 42.15mm, Do= 42.65mm
H= 5.45mm
F= 0.6mm
T= 2.4mm
7/15 jewels
f = 18000 A/h
power reserve 39h

Balance staff U1076

Stem W1575 / W1853
thread 1.6/1.2mm

Mainspring / battery
Zf3545, 2.05 x 17.0 x 0.20 x 520mm

1.80 x 1.00 / 0.30mm

Comments about the data

open face calibre
options: bimetallic screw balance, Breguet hairspring
differences not known between 9, 27

3: hunter or open face
9, 27: open face
9CH: chronograph, crown operated
10: chronograph, pusher operated
11: chronograph, split second

Example, year: signature; shock device
1-2) 1925: 1338651, Minerva - 3, Minerva (RFV with arrow, Robert Frères, Villeret), Depose
1949: old data sheet

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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