On January 1st 2021 many old canadian currencies will become worthless. It is extremely important that you cash all old money that is not collectible into the bank.
As a coin and currency collector I find it personally disturbing that Canada is behaving like a third world country and demonitizing its currency. This will only harm the ill informed and particularly seniors. When I appraise collections for families we often find piles of old currency that the family didn’t even know existed. It is going to create a very strange time in 2020 as dealers and collectors have to hope for the best on there collections.