Just to add my 2cents worth...
Prior to leaving Canada, I went to the Scotiabank in Garden City, Winnipeg, and turned in a LOT of old paper notes that I had been saving ($1,$2, $5, $10, $20, $50, $100 notes), MOST (98%) were in mint UNCIRCULATED condition.
So, although highly unlikely that they'll distribute, there might be a possibility that the odd one MIGHT be out there.