Thanks.
I played with 2 watches today - An OP 114300 and and an Explorer 1 214720. Both had the 3132 movement beating inside.
I unscrewed the crown and gave it a few turns counter clockwise.
From the Explorer I could hear the fine ratcheting sound you mentioned 9 times per full turn (every 40 degrees).
From the OP there was only 3 ticks per full counter clock-wise turn.
So the variation is due to less or more friction in the mechanism ?
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