Subgage,
As stated by others we need photographs and details of the proof marks to Identify the Moore Gun or for that matter any gun.
The names; Wm,Moore & Co; W.Richards and J.Manton & Co; were Folsom house brand names, engraved or stamped on inferior quality Belgian hammerguns. The Wm;Moore hammer gun sold by Folsom was priced at $13.50 in 1884.A fraction of the cost of a London made gun of the era.
H&D Folsom Arms Company was located at 312-314 Broadway New York,and was active from 1859 to circa 1930.In later years they acquired the Cresent Fire Arms Company; a fire arms manufacturing company.This business was active till circa 1930.
For the record, Folsom used over 100 different brand names on guns that they offered for sale.

Last edited by Roy Hebbes; 03/08/13 05:26 PM.

Roy Hebbes