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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Helvetia 80C

manual wind
sub second

11.5''', Dm= 25.55mm, Do= 25.95mm
H= 4.05mm
F= 1.2mm
T= 1.9mm
15/17 jewels
f = 18000 A/h
power reserve 40h

Balance staff U1448

Stem W1180

Mainspring / battery
Zf1321, 1.60 x 9.5 x 0.095 x 330mm

1.35 x 0.80 / 0.22mm

Comments about the data

different bridge shapes (cf. 82C)
late samples with Kif-Duofix combined settings for escapement wheel

80: 11.5''', sub second
820: 10.5''', sub second
800: 11.5''', sweep second
820: 10.5''', sweep second
800: 11.5''', sweep second, plane base plate
suffix C: two screws for crown wheel

Example, year: signature; shock device
ca. 1955: Helvetia, Swiss Made, 15 Jewels - 3026; Helvetia-Shock-Absorber (only dial side)

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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