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 Fig. 1 | Omega 355 Features automatic (bumper) sweep second date Data Dm= 28.1mm, Do= 28.5mm H= 6.1mm F= 2.05mm T= 2.15mm 17 jewels f = 19800 A/h power reserve 42h Balance staff U1604 Stem W2907 Mainspring / battery Zf490, 1.10 x 8.5 x 0.10 x 250mm Hands 1.40 x 0.75 x 0.18mm Comments about the data | Remarks 1953-1955 family 28.10, 30.10 (330...355): 1943-1955, >1300000 (incl. >500000 chronometers) partially as chronometers family/generations: 30.1mm, sub second: 330 (30.10RA PC): - 331 (30.10RA PC AM): antimagnetic 332 (30.10T1 RA PC): redesign 331 333 (30.10T1 RA PC RG): excenter regulator 28.1mm, sub second: 340 (28.10RA PC): - 341: jubilee edition of 340 342 (28.10T1 RA PC): redesign 340 343 (28.10T1 RA PC RG): Chronometer, excenter regulator 344: redesign 342 28.1mm, sweep second: 350 (28.10RA SC PC): - 351 (28.10T1 RA SC PC): redesign 350 352: chronometer, excenter regulator 353: date 354: redesign 351 355: date, redesign 353 Example, year: signature; shock device 1952: 13170518, 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. |
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