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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Orator 220 open face

stem wind and set
sub second

18''', Dm= 41.0mm, Do= 41.75mm
H= 4.4mm
F= 0.65mm
T= 2.0mm
7/15/16 jewels
f = 18000 A/h
power reserve 36h

Balance staff U1019

Stem W1519

Mainspring / battery
1.60 x 16.5 x 0.20mm

1.85 x 1.00...1.20 / 0.28mm
(cf. other variants)

Comments about the data

open face calibre
option: Breguet hairspring
different bridge shapes (cf. Orator 280)
attention: left handed ratchet-wheel screw

220: H= 4.4mm
280: H= 5.25mm

Example, year: signature; shock device
1-2) ca. 1940: *Orator* Swiss, 18.220, Swiss Made, 15 Jewels
under barrel bridge: 770721
3-4) ca. 1945: Swiss, 15 Rubis - (Schild) 18220, 112

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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