I wonder if anybody else has thought of this:
For the first time, there are three versions of the $10 bill in general circulation. (4 if you count the occasional paper $10 still found out there from time to time).
I'm still searching for the elusive 2017 CDF prefix and the FTN Macklem/Carney notes; I have not found a single one in Toronto so far. I've been driving the local bank tellers mad, but they now know me as the "guy who collects old stuff" and they are really nice about it too!
(interestingly, I found five HBG Macklem/Carney notes in circulation when that was a thing a few years ago).