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Is the Speedmaster Professional COSC certified ?

April 26, 2017certified COSC professional Speedmaster

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Is the Speedmaster Professional COSC certified ?

1 Answer

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No it is not (at the exception of some gold and skeleton editions) but this does not mean that it could not be an excellent timekeeper , finely regulated a speedmaster professional can be very accurate and within the COSC specifications (-4/+6 s/day)