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I come across a P9000 movement and due to its see thru back case.
I realized that the rotor blade swing smoothly when it was unwind (the watch is stop), and rotor blade was not so smooth in swing when it was fully wind. Is this norm?
I realized that the rotor blade swing smoothly when it was unwind (the watch is stop), and rotor blade was not so smooth in swing when it was fully wind. Is this norm?