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Fig. 1

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Fig. 2

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Fig. 3

Cortebert 677

manual wind
sub second

12''', Dm= 26.6mm, Do= 27.0mm
H= 4.0mm
f= 1.4mm
T= 2.1mm
15 jewels
f = 18000 A/h
power reserve 41h

Balance staff U1895

Stem W2138

Mainspring / battery
Zf1394, 1.70 x 10.0 x 0.10 x 350mm

1.50 x 0.72 / 0.20mm

Comments about the data

option: Spirofix regulator

677: 12''', sub second, 15 jewels
677: 12''', sweep second, 16 jewels
678: 12''', sub second, 17 jewels
681: 11.5''', sub second, 15 jewels

Example, year: signature; shock device
1-2) ca. 1945: Cortebert***, Cal. 677, Swiss Made, 15 Jewels
3) ca. 1950: Cortebert***, Cal. 677, Swiss Made, 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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