For the canadian dimes, check the dates. I just found out myself that the 1967-68 canadian dime is 50% silver, as is the 1967-68 Quarters are. The 1920-67 dimes and quarters are I think 90% silver. This is according to Coinflation.com website. I was gobsmacked when I saw that. Imagine all those years of getting rid of my canadian money, except the quarters and some dollar pieces, I like those, I might have been giving away perfectly good silver. eeesh, not that you could have seen it due to the canadian currency compared to the american one. Anywhose, there are my two pennies worth, (pun intended LOL)
sincerely, GarouLady