I found this recently in a quarter roll. (It was gunky so I acetoned it). I generally don't get foreigns. I got one other Canadian a while back, a newer date, but it looked as if it came out of the mint yesterday, so I saved it as an MS condition coin.
I found a 1959 in the reject bin of a coin machine in my credit union a couple of years ago. First and only time I've found foreign silver in the wild.
Yes I realized it was silver when I saw 1964. At first I was upset because I am like WTF, a Canadian coin. But then I flipped it over and it was the score of the hunt.