new collector - start up help

I am intrigued by old currency and I have seen quite a few older bills and coins circulating through tills at my work. I recently came across a 1954 Canadian $1 bill, rather worn but not torn or written on at all. My question is what years for coins and bills would be considered valuable and/or collectable? What should I be on the lookout for in currency that is circulating? Thanks!

aspiringk, 12/15/2011
CCRS member since: 12/15/2011
Posts: 1

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