I think most of us have a great teller..or two, but I was specifically referring to a bank having a bowl of old obsolete coins for people to look through. Never seen that. Nope, certainly not in Canada, but I've lived in 13 different states and have never seen a bank to this. THIS is more on the lines of what I was thinking.......
Buy them all, and give the tellers a nice present, box of chocolates, something! It will let them know you appreciate it and will make it more likely they will let you know if anything else comes in. That bank is a treasure, treat the tellers right!
I agree with Conder! Always take care of those people. (My wife is a teller, and she likes those large chewy Sweet Tarts.)