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Fig. 1

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Fig. 2

Omega 321 (Lemania CH27 C12)

manual-wind chronograph, 60s, 30min, 12h, pillar wheel
sub second

12''', Dm= 27.0mm, Do= 27.5mm
H= 6.74mm
F= 1.67mm
T= 2.67mm
17 jewels
f = 18000 A/h
power reserve 44h

Balance staff U2168

Stem W2699

Mainspring / battery
1.30 x 10.0 x 0.11mm

1.90 x 1.05 x 0.22 / 0.30 x 0.25 x 0.20mm

Comments about the data

1946-1968 (27CHRO C12 T2 until 1949), >40000
Breguet hairspring
regulator with catch device for hairspring (cf. Lemania S27)

27CHRO T1, 320: -
27CHRO C12 T2, 321: hour counter

Example, year: signature; shock device
1966: 24952581, Omega Watch Co, 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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