Do "NOS" gears have lapping compound on them?

lapping compound is NOT the same as testing paint. some times its just paint for "oil painting". or Prussian blue. if lapping compound was left on the gears it will add more wear to the gears, when in use. lapping compound is the way the gears are finished. on a very special machine. the lapping takes off only a few thousands. add makes the surface way smoother that a milling machine could do.