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

Patridge front and notch rear sights, with the barrel sleeved to its current caliber. Standard markings on the top barrel flat, checkered forearm and pistol grip.

OE - GOOD - some minor replacement parts; metal smoothly rusted or lightly pitted in places, cleaned; principal lettering, numerals and design on metal legible; lightly scratched, bruised or minor cracks repaired; in good working order.

Manufactured in the early 1860's. Pin and notch sights, with one line address on the left side of the barrel, spur trigger, checkered hammer and smooth grips.

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

Introduced in 1907. Blade and elevator sights, with two line Chicopee Falls address on the left flat, "20" in a circle on the left side of the frame, smooth grips. The barrel has been shortened to it's present length. Metal buttcap removed and replaced with a wood one.

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.

Cone sight, with "crown/ crown/ U" proof on underside of the barrel, smooth bird's head grips. Metal cleaned.

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.

As C, "A & T" address, no frame marking, standard grip cap. Renumbered. Barrel shortened.

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.

As C, "A. & T." address, no frame markings, standard grip cap.