Another Machin endless rabbit hole.
I had a batch of 3p Machins and decided to explore the world of value positions (the 3p position in relation to side and bottom.
I was recording measurement combinations not listed. The short answer is the value positions are NOT all possible positions and on any given sheet the position can vary per Hans at Deegam Publications. Hans told me Myall only measured one stamp per sheet.
For me, it is not definitive enough for identifcation or even including consider.
Here are some images from Deegam showing.
Deegam defined value positions

Typical listing

example measurement
