My dad and i just got one of his guns out of storage and were interested in the value of the shotgun. It is a double-barrelled hammerless gun manufactured by Davis-Warner. It'm sure it was manufactured between 1917 and 1921, as all information on this maker suggests that the company N.R. Davis & sons (which appears on the barrel) was merged with Werner in 1917, but the merger dissolved by 1921 to the Crescent company (?). The serial number on this particular gun is #3005. Any help would be so appreciated!!