Certina 1641, 1642, 1643 Jewels and Reduction Gear Parts
Technical parts reference sheet for Certina watch movements 1641, 1642, 1643. Details jewels for oscillating weight (upper and lower) and reduction gear jewels. Lists compatible calibers: 19-45, 25-45, 25-65 for models 1641-1642; additional calibers 15-20, 17-351 for model 1643. Cross-references with movement calibers 19-451, 19-55, 19-551, 25-451, 28-45, 28-451, 25-651, 25-652, 25-681, 25-682, 17-21, 17-211, 17-221.
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