Exactly, and I would also have expected a maple leaf in the crest, instead of the stars. I think, I remember something about the leaf being introduced, when the Canadian branch was established. I'm not 100% sure about the latter, though.
I researched this issue and although I am not 100%, my recollection was that the maple leaf was introduced in 1954 to commemorate Canadian manufacture as The Dane suggested.
"Faint hat never won fair lady."