I had some SunTour power shifters on a Nishiki back in the 70's, I grew to like them quite a lot, at least until I tried barcons...
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1971 Paramount P-13 Chrome
1973 Paramount P-15 Opaque Blue
1974 Raleigh Professional Blue Mink
1991 Waterford Paramount
Holland Titanium Dura Ace Group
Holland Titanium Ultegra Triple Group