OF - FAIR- some major parts replaced; minor replacement parts may be required; metal rusted, may be lightly pitted all over, vigorously cleaned; rounded edges of metal and wood; principal lettering, numerals and design on metal partly obliterated; wood scratched, bruised, cracked or repaired where broken; in fair working order or can be easily repaired and placed in working order.
"1864" dated lock. Bored out smooth.
OG - POOR- major or minor parts replaced; major replacement parts required and extensive restoration needed; metal deeply pitted; principal lettering, numerals and design obliterated, wood badly scratched, bruised, cracked or broken; mechanically inoperative; generally undesirable as a collectors firearm in its present state.
NPRF - NON-PROFESSIONALLY REFINISHED/COLD BLUE, ETC.
"1863" date lock. Cut-down and bored smooth.