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View picture in original size
Fig. 1

Certina 19-451

Features
automatic
sweep second
date

Data
8.75''', Dm= 19.4mm, Do= 19.8mm
H= 6.25mm
F= 1.95mm
T= 2.85mm
23/25 jewels
f = 18000 A/h
power reserve 37h

Balance staff U2781

Stem W2804

Mainspring / battery
1.30 x 7.5 x 0.07mm

Hands
1.30 x 0.80 x 0.16mm

Comments about the data

Remarks
1956-
detached manual wind
minor modifications during production periode (cf. Certina 19-55)

family:
18000 / 19800 A/h respectively
19-25/19-35: manual wind
19-26/19-36: manual wind, smaller barrel
19-251/19-351: manual wind, date
19-45/19-55: automatic
19-451/19-551: automatic, date
automatic with smaller balance

Example, year: signature; shock device
1956: Certina, 19-55, Swiss Made, Patents+, 25 Jewels; Incabloc
(Certina 19-55, 19800A/h)

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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