For example, the new $20 polymers, the first run is BIx where x started at E and goes through to Z. I want to confirm which letters they skip. I believe it is I, O, Q and X? Has it always been this way (since they stopped using X to represent replacement bills), i.e. is this a consistent policy across most central banks?
Thanks for the input. I look forward to hearing from some of the experienced members.