@ingalls @xssfox @AnOldGuy @arcadiagt5
Some post offices, I know about the US post and the hungarian post has/had a division which worked on delivering the non-standard addressed mail.
There is a legend of a mail addressed to "Hunyadi 2" which went through 50+ post offices where there was a Hunyadi road, square, alley, place, terrace, etc. then returned to the sender.