This puzzling evidence is called 'Experiment IV'. The original tiny card was torn in half and plastered down with some heavy clear tape with the note: "Did not meet minimum size standards of 3 1/2" by 5" or 7/1000" thick". Deviant work by the SBW or a Post Office wreck? You decide.
"Experiment IV" also is the name of one of my favorite songs. Find out why here: Experiment IV. (Thank you Miss Bush). Nice to see you here again Richard and thanks very much for your 'puzzling evidence' card - love it!