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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Certina 321

Features
manual wind
sub second

Data
12''', Dm= 27.0mm
H= 3.9mm
15/16 jewels
f = 18000 A/h
power reserve 42h

Balance staff U858

Stem W884

Mainspring / battery
Zf1481, 1.80 x 11.0 x 0.12mm

Hands
1.43 x 0.80 / 0.20mm

Comments about the data

Remarks
like 320, but different bridge shapes
early samples signed as 320 on dial side

Example, year: signature; shock device
1-2) ca. 1950: Certina, KF 321 (Kurth Freres), Swiss Made, 16 Jewels - K.F.320; Incabloc
3-4) ca. 1955: 8, Certina, 321, Swiss, 15 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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