I thought that the crankset in '80 would still have the 3 cutout "Herons" . That crank looks more like 90 than 80 however, I don't think they would still have been coming from Canada by '90 so it's got to be an '80.

What does the head badge and bottom of the rear fender say?? My Canadian Sports says "Nottingham.."

Either way, it's a lovely bike!!