The paint scheme looks like a Raleigh Gran(d) Sport(s). Carlton built the Super Course AFAIK. Did they also build the Gran(d) Sport(s)?Yes my guess is late 70's also the rear derailleur is marked 78 patent. I tried doing some research on this model but didn't find much info online. It looks to be on par with the US Raleigh Competitions but has the Gran Sport color scheme .