[wickettoby1]

That’s crazy🤔 I haven’t ever seen any factory markings like that so my guess is someone has had a look see inside but no clue on what they were numbering.

 

[wickettoby1]

What measurements might those #’s represent? Piston to wall clearance🤔 Thousands removed from the deck🤔
# of licks to the center of a tootsie pop🤔