Yes - WWI.........
Certainly look to be Larry. You can date the Canada and maple leaf badge quite accurately if a good straight on view is shown. I have a link somewhere that shows the variations through time that I can't find at the moment but I will add it when or if I find it.
Whatever its just an opinion.
Bit of luck your maple leaf may be marked like mine here?
it's marked but not very clear.....
Thanks a lot guys!