This specific firearm designation likely refers to a double-barreled shotgun manufactured by a company operating under a name similar to “N.R. Davis and Sons.” Double-barreled shotguns are typically break-action firearms with two independent barrels, allowing for two shots to be fired in quick succession. They are traditionally used for hunting game birds and clay target shooting, and are often prized for their craftsmanship and balance.
Firearms produced by smaller, often family-owned, companies like the one implied in this designation can represent a significant part of firearms history. These manufacturers often catered to specific regional markets or specialized needs, resulting in unique variations in design and construction. Understanding the lineage and specific features of these firearms can offer valuable insights into both the technical evolution of firearms and the social history of their use. Such firearms can also hold significant value for collectors, particularly if they are well-preserved or represent a rare model.