Happened to be at the teller for the first time in almost 2 years doing a simple funds transfer.
At the counter beside me, someone was turning in a pile of old notes (noticed the 1954 $20 on top) - the teller was asking "is this Canadian money"? Immediately I stepped in and offered to exchange the notes off the customer.
There was $83 in the pile, 1x1954 $20, 1x1954 $10 (DF), 1x1954 $10, 1x1954 $5, 1x1954 $2, 2x1974 $2, 8x1986 $2, 2x1937 $1, 2x1954 $1, 12x1973 $1.
Nothing remarkable in the pile (the 1954s and 1937s were in rough shape), but still a cool find at the bank by pure coincidence! (I've never gotten 54s or 37s from a bank before)