MODERN CONDITIONS --
New -- not previously sold at retail, in same condition as current factory production.
Perfect -- in new condition in every respect.
Excellent -- new condition, used but little, no noticeable marring of wood or metal, bluing perfect (except at muzzle or sharp edges).
Very Good -- in perfect working condition, no appreciable wear on working surfaces, no corrosion or pitting, only minor surface dents and scratches.
Good -- in safe working condition, minor wear on working surfaces, no broken parts, no corrosion or pitting that will interfere with proper functioning.
Fair --in safe working condition, but well worn, perhaps requiring replacement of minor parts or adjustments which should e indicated in advertisement, no rust, but may have corrosion pits which do not render article unsafe or inoperable
Above are the NRA's ratings for firearms.