NC - FINE- All original finish 90% - 94% or better, some dings in wood wear commensurable with percent of finish. In working order.

ND - VERY GOOD- in working condition, 80% finish or better, appreciable wear on working surfaces 80% - 89%, no corrosion or pitting, minor surface dents or scratches. Wood condition commensurable with percent of finish with dings and dents associated with 80% - 89% gun.