I live 40 min for the Canadian border and see a lot of Canadian coins in 1, 5, and 10 cent rolls. I don't buy quarters often.
1 cent- up thru 1996 they were 98% copper, with a metal value of 2.5-3 cents.
5 cent- up thru 1981 they were 99.9% nickel which translate to a metal value of 10-11 cents.
10 cent coins were 80% silver until they change to 50% mid 1967, then they change to 99.9% nickel mid 1968 then they change to nickel plated steel around 2000.
I collect the one best example of ever year I can.
I keep all copper 1 cent, all nickel 5 cent and all silver dimes.
I find other foreign coins but not alot, I tend to keep those too unless they are very damaged.
HH!!