I recently found a Canadian nickel that has no year stamped underneath the word Canada (which is underneath the picture of the beaver) on the front of it. The back has a small date stamped "1952-2002". I would assume this means it's a regular 2002 nickel? All the other nickels I have looked at to compare have dates there. Was this something they changed for a while or is this an error? I looked at 2003 and 2004 nickels, and they both have dates, too. If anyone has info, please advise. Thanks.