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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Omega 250

Features
manual wind
sweep second

Data
Dm= 13.5 x 17.5mm
Do= 13.5 x 18.0mm
H= 4.15mm
F= 0.8mm
T= 1.6mm
17 jewels
f = 21600 A/h
power reserve 48h

Balance staff U1603

Stem W1298

Mainspring / battery
1.20 x 6.5 x 0.08mm

Hands
1.10 x 0.70 x 0.15mm

Comments about the data

Remarks
1938-1959, >1400000 (whole family except 245)

family/generations:
no second:
240 (R13.5 until 1949): 15 jewels
241: 15 jewels, antimagnetic
242: 17 jewels
243: 17 jewels, antimagnetic
244: 17 jewels, antimagnetic, Incabloc
245: ring balance 19800 A/h instead of screw balance 21600 A/h
sweep second:
250 (R13.5SC until 1949): 17 jewels
243(251): 17 jewels, antimagnetic
252: 17 jewels, antimagnetic, Incabloc

Example, year: signature; shock device
1961: 17825778, Omega Watch Co Swiss, 17 Jewels; Incabloc
(Omega 252)

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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