
Omega 23.4 (220), Main spring, no: 770
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Manufacturer: Prima, no: 140 K 31
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Fits cal: 23.4, 23.4SC, 24.4SCT1, 23.4T2, 220, 230, 231
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H: 1,40 -
D: 9 -
F: 0,095 -
L: 310
Versions:
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220: (23.4 until 1949), sub second. -
230: (23.4SC until 1949), center second. -
231: (23.4SCAM until 1949), center second, antimagnetic.