To clarify the principle of Occam's Razor.

The most useful statement of the principle for scientists is
"when you have two competing theories that make exactly the same predictions, the simpler one is the better."



For our purposes " competing theories" are obvious, "same predictions" being BB (or otherwise) center-snapped /west facing stamp.

Too much has been lost to the ditritus of time and the unpredictability of hand made products. It is simpler to say (and wholly accepted by the collecting community) Heiser is Heiser -Randall Made is MJ.
Worth noting, of course, the adamant statements from the maker themselves lending credence to the latter.

Of course, the location of purchase orders to the stamp maker, shipping records, correspondence between Bo and Heiser, etc., would force a change in current thought.