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Fig. 1

View picture in original size
Fig. 2

Certina 25-661

manual wind
sweep second
date: set by changing 23-24h

11.5''', Dm= 25.6mm, Do= 26.0mm
H= 4.3mm
F= 2.0mm
T= 2.7mm
17 jewels
f = 19800 A/h
power reserve 46h

Balance staff U2822

Stem W2822

Mainspring / battery
1.20 x 10.0 x 0.12mm

1.50 x 0.90 x 0.18mm

Comments about the data

choice between bevelled and plane date disc (cf. 25-651)

19800 A/h:
25-65: automatic
25-651: automatic, date
25-652: automatic, day, date
25-66: manual wind
25-661: manual wind, date
28800 A/h, ball bearing for minute staff:
25-671: automatic, date
25-672: automatic, day, date
28800 A/h, ball bearing plate redesigned:
25-68: automatic
25-681: automatic, date
25-682: automatic, day, date

Example, year: signature; shock device
1965: Certina, 25-661, Swiss, 17 Jewels; Incabloc

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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