Older CCM bikes are very nicely made bicycles and were rather light for their day but I am not a fan of the later versions from the 70's as they are more tank like and cannot compare to the feel of a Raleigh on the road.
My 1940 CCM has a rather lightweight frame (5 pounds) and has a pretty amazing ride... my 1933 CCM roadster was also relatively lightweight compared to the 60's versions which used much heavier frames that go *thunk* when you tap them.