Interesting! I had a Pre-Viceroy with 204.xxx serial and 1-12 sub counter, and have a Derek Bell MK III with 203.xxx Serial from first owner and 3-6-9-12 Counter and polished hands.
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You can check the back of the watch. at the lug, you will find a triangle or two. If I remember correctly one triangle means Cal.11, two are Cal. 12.
Best guess is, your dial and hands were swapped at a service?
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