1967 Supercycle lineup
http://farm8.staticflickr.com/7149/6598040377_a45d09b4eb_b.jpg
Here is a scan from the 1967 Spring-Summer Canadian Tire Catalogue, featuring the basic men's Supercycle and Deluxe Centennial edition models. Noted as being manufactured for Canadian Tire "by Canada's leading bicycle manufacturer", which of course was CCM. The front fender of the green model is an obvious CCM part, as well as the shape of the chain guards and frames, but both have the generic chainring. It is interesting to note, that CCM made it's own special edition of the Canadian centennial celebration in 1967 as well.
Based on the design shown in the ad, I thing I have a good idea of the time frame of my newest CCM find. Thanks for sharing the ad.