OA - FACTORY NEW- all original parts; 100% original finish; in perfect condition in every respect.

PRF - PROFESSIONALLY REFINISHED OR RESTORED

Manufactured c. 1913-1920. Cylinder choke, 2 3/4" chamber, and 13 3/4" LOP. These were first introduced in 1887 but were produced on in "very limited numbers" prior to serial number 100000 per Madis. "Most shotguns are found in the 110,000 to 115,000 serial ranges."