Canadian quarters were 80% silver up through 1966. In 1967 they issued 80% and 50% quarters and in 1968 they issued 50% and 99% nickel. Using a magnet will help out as the 99% nickel one will stick to it.check the dates on the canadian. If they are pre-1950's chances are they are 80% silver.
The 40% are silver.
so they are silver proof quarters and american? i know they did silver proof for the statehood quarters. is this what it is.