Do "NOS" gears have lapping compound on them?

moe7404 said
i have been a machinist for a LONG time. but have never ran a lapping machine. but have talked to guys that have. i think the lapping compound would NOT be left on the gears. what is on them is marking paint, for testing the grind on the gear. gust my idea.

nm9stheham said
The 'wear' pattern on the paint on the ring teeth in particular sure looks like a normal mesh pattern, as if these had been set up and spun around some.

Exactly, on both counts.
It's just what was told to the OP was obviously someone who didn't have a clue.
They were painted, spun and they decided against them for whatever reason.