Omega 503
Example movement OMEGA cal: 503. The total production of cal 503 was 169.000 pcs.
Data: Omega 503 (28 RA SC PC CAL AM 20 p).
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19/20 jewels, automatic wind, hour and minute display, sweep second, date. -
Size: 28.00 mm. -
H: = 6.40 mm. -
N: = 19.800 A/h. -
Power reserve: 40 h.
Versions: 25.00 mm.
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470: 17 jewels (1955). -
471: 19/20 jewels (1955).
Versions: 28.00 mm.
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490: 17 jewels, sub second (1956). -
491: 19 jewels, sub second (1956). -
500: 17 jewels, center second (1956). -
501: 20 jewels, center second (1956). -
502: 17 jewels, center second, date (1956). -
503: 19/20 jewels, center second, date (1956). -
504: 24 jewels, center second, date, chronometer (1957). -
505: 24 jewels, center second, chronometer (1957).