Longtime Calgary broadcaster turned realtor, Jimmy Hughes, posted an absolute gem on YouTube-
https://www.youtube.com/watch?v=J7FpE6JCl0g
It's Jimmy, with the late Ed Whalen, pro wrestler Gil Hayes(?) and a young Bruce Hart refereeing in a TV commercial for the "Great Winter Boat Sale" at Neilson's.
It appears to have been shot on location in the Calgary Stampede's Victoria Pavilion in a Stampede Wrestling ring.
My guess is 1975 for the ads - one 60 seconds in length, the other a 30 second spot.
Please keep 'em coming, Jimmy!