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View picture in original size
Fig. 1

Omega 286

manual wind
sweep second

Dm= 30.0mm, Do= 30.5mm
H= 5.1mm
T= 1.7mm
17 jewels
f = 18000 A/h
power reserve 45h

Balance staff U2765

Stem W621

Mainspring / battery
1.50 x 11.5 x 0.135mm

1.70 x 0.95 x 0.24mm

Comments about the data

last version of Omega 30SC (1940-)

sub second:
30 : 15 jewels, no shock protection
30T1: 15 jewels, no shock protection
30T2: 15 jewels, no shock protection
30T2PC: 15 jewels, Incabloc
260: =30T2 since 1949, 15 jewels
261: 17 jewels, antimagnetic
262: 17 jewels, excenter regulator
265: 15 jewels, antimagnetic
266,267: 17 jewels, antimagnetic
268: ring- instead screw balance
269: flat- instead Breguet-hairspring
sweep second:
30SC : 16 jewels, no shock protection
30T1: 16 jewels, no shock protection
30T2SC: 16 jwwels, no shock protection
30T2SCPC: 17/18 jewels, Incabloc
280: =Omega 30SC T2 since 1949, 17 jewels
281: 17 jewels, excenter regulator
283,284: 17 jewels, antimagnetic
285: ring- instead screw balance
286: flat- instead Breguet-hairspring

Example, year: signature; shock device
1964: 20774689, Omega Swiss, 17 Jewels; Kif-Elastor

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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