OB - EXCELLENT- all original parts; over 80% original finish; sharp lettering, numerals and design on metal; unmarred wood.

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

OC - FINE- all original parts; over 30% original finish, sharp lettering, numerals and design on metal and wood; minor marks in wood.

With contemporary wooden case.

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.

WB - WOOD IS BETTER FOR THE PERCENT OF FINISH RATING GIVEN

OB - EXCELLENT- all original parts; over 80% original finish; sharp lettering, numerals and design on metal; unmarred wood.

WW - WOOD IS WORSE FOR THE PERCENT FINISH RATING GIVEN

OB - EXCELLENT- all original parts; over 80% original finish; sharp lettering, numerals and design on metal; unmarred wood.

OD - VERY GOOD- all original parts; none to 30% original finish; original metal surfaces smooth with all edges sharp; clear lettering, numerals and design on metal; wood slightly scratched or bruised.