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Speedmaster trivia question
Does anyone know what the power reserve is on a cal. 321 movement? 
i think 46-48 is about right, but if you wind it daily it wont ever stop [nt]
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Merci!
Thanking you kindly!
I guessed from my rather rough estimation ~50hrs, having only let it stop once for a brief trip to the slopes of New Zealand.
Methinks it does not snow on the moon. Better to leave Speedy at home : )