I can tell you that your shotgun was made by J. Stevens Arms sometime between 1914 and 1940, the barrel was cut off and the Wells Fargo markings were added by someone trying to make an inexpensive shotgun appear to be a rare collectable firearm. WF guns were not marked with the brass plates and so many "stagecoach guns" have been faked that there is no collector market for any that do not have solid provinence, ie., a bill of sale from the company identifying the make, model, and serial number.
Riverside was an 'economy' brand used by the Stevens division of Savage in the 20's and 30's.
Riverside shotguns were made by Stevens. I'm not sure when they started and stopped using this name, but the Riverside hammergun should be the Model 215 which was produced from 1913-1932.
The Riverside trade name was used by J. Stevens from 1915-mid 1940's. You MIGHT be able to get a precise date by contacting the Stevens historian. savagearms.com should have his contact information.
Riverside Arms is a brand name used by the J Stevens Arms Co. on many good quality shotguns. The value depends on model, gauge, and condition. There is little collector interest in single barrel shotguns. Information about J Stevens Arms apply to Riverside Arms Co.
500..us dollars
Try Numrich arms @ www.e-gunparts.com
Depends on what is marked on the gun.
If this is the model 215, the barrels are steel.
100 to 150.00 dollars in good condition.
50 Bucks...
This a double barrel shotgun. This is my second favorite shotgun in the world. The reason why it is called 12 Ga double barrel is that the barrel in 12 inches long, and every two shots, it has to be reload.
Many early ones may not have a serial number. If they do, it will most likely be on the side of the receiver. There is a small chance it will be inside, after you remove the barrel.