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Not the best expert on this but I thought service dials for this would be 'Swiss Made'.
I haven't seen any Swiss only service dials around. Swiss only was used in a short period 1998-1999 or maybe early 2000 if i recall correctly.
If you would want to change the dial and hands to be period correct (i.e 1984 to 1986), you would want the tritium 'Swiss T < 25' dials.
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