So what is it?
Under a loupe it’s not a repaint
Script looks like my 71
Transitional?
It is a different variant of a ‘long hour indices’ Speedmaster Professional dial.
It is fitted to an 861 movement which means it could not have 321 style dial feet.
It also has ‘Narrow T’s’ on the bottom which doesn’t line up with any 861 Applied logo dial.
Additionally, if you carefully examine the OMEGA Speedmaster Professional print on the dial you’d notice that it does not match up with any of the acceptable dial variants deemed correct by literature and scholars for any of the ‘Pre-moon’ Speedmaster Professional references.
I have seen one more MKII with this type of dial in the past. Unfortunately, I do not have photos.
We could only assume that this is some sort of a Applied logo dial with 861 feet that somehow found its way into this watch.
I have also seen applied logo Pre-Professional dials (with narrow T’s) that had 861 feet, so we know such dials were indeed manufactured by Singer at some point, yet are not correct for any of the known Speedmaster references.