A friend who lives in Canada brought me 5 rolls of Canadian nickels down to the states so I could look for recent dates. After I was done I ran a magnet over all the loose coins so I didn't run those through coin counters here in the U S which will reject steel.
I looked through the magnetic ones and noticed one was a 1965 nickel. I held it up to a small magnet and it would stick. I'm assuming somehow from being stored with other magnetic nickels it was just reacting to the magnet and the nickel itself was not steel. Does this happen with some Canadian nickels?