My '77 ROW is non sunroof (930 770 0192). I have a COA from PCNA which is reasonably accurate, but I unfortunately don't have the Kardex for this car which would probably be more precise given this was originally a German market car. The COA doesn't mention sunroof at all (e.g. it doesn't explicitly say non-sunroof).
FWIW I also have a '77 US 911 full line brochure. On the page listing standard equipment for 930, it does *not* list sunroof. I can't remember if they made it standard on the 3.3L cars but at least on the US 3.0L non-intercooled cars (I'm assuming '76 is same as '77) sunroof was still an option.
