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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Certina 19-31

Features
manual wind
sub second

Data
8.75''', Dm= 19.4mm, Do= 19.5mm
H= 3.6mm
17 jewels
f = 19800 A/h
power reserve 46h

Balance staff U2783

Stem W2211

Mainspring / battery
1.60 x 7.0 x 0,075mm

Hands
1.30 x 0.80mm

Comments about the data

Remarks

family:
19-30: base plate with mounting flange
19-31: base plate without mounting flange

Example, year: signature; shock device
ca. 1960: Certina, 19-30, Swiss, 17 Jewels; Incabloc
(Certina 19-30)

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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