albert - why do you want canadian pennies? people like all differnt kinds. The rare ones are 1 in a million. you need to read about canadian pennies. Just buy a bunch, and then sort them later.
1922 - 1,243,635 minted
1923 - 1,019,002
1924 - 1,593,195
1925 - 1,000,622
1955 w/o strap
Above are the key dates - worth 20 bucks or more each. I would personally save any canadian coin that is copper ( GOOGLE IT). Another fun thing to look for are the different portraits on the Canadian penny. Young queen Elizabeth - old queen Elizabeth - king George the V, and king George the VI.