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Cal. 1040 serial numbers observed:
670 or 0.815% of 82,200 movements produced (per A Journey Through Time)
Cal. 1041 serial numbers observed:
148 or 7.40% of 2,000 movements produced (per A Journey Through Time)
For more detailed and updated information on Speedmaster 125 production – verified by the Omega Museum archives, please visit my site speedmaster125.com.
Ratio of 1041 observation rate to 1040 observation rate:
9.08 to 1