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

NF - FAIR- 0% - 40% with generally smooth finish, may have mild cleaning yet not deeply pitted, but well worn, replacement of minor parts may need mechanical adjustments, may have rust and may have corrosion pits which do not render article unsafe or inoperable. In working condition. Wood condition commensurable with percent of finish with dings and dents associated with 0% - 40% gun.

NPRF - NON-PROFESSIONALLY REFINISHED/COLD BLUE, ETC.