Made by Crescent Firearms Co for HSB & Co.
What information would you want? Crescent made single shotguns from 1893 to 1930. If it has a large side hammer and damascus barrels, it would almost certainly be from before 1915. If it has fluid steel barrels and a center hammer (or is hammerless) then sometime after 1903.
Can't be before 1892 or after 1931. If it is hammerless AND has fluid steel barrels, it is after 1903. Open hammers and/or damascus barrelled guns continued to be manufactured after that date also.
Vulcan: Trade name used by the H. & D. Folsom Arms Company on firearms made for the Edward K. Tryon Company of Philadelphia, Pennsylvania. Folsom was a retail/wholesale operation in NYC and the gun would have been manufactured either by Crescent Firearms, Norwich, CT, or by one of several Belgian companies, around 1900. If it is a boxlock with fluid steel barrels, it could be a $200+ shooter (if approved by an experienced gunsmith). If it has side hammers and damascus barrels, it should be a mantle decoration for $125-$150.
Enders Royal American was a brand name placed on shotguns manufactured by the Crescent Firearms Company for sale by catalog/hardware stores. You might check under the barrels for Belgian proofs as well. These guns were made before World War I and typically should not be used with modern ammunition.
100 USD or so
This Shotgun was manufactured by the Mossberg Company.
belived to be a German barrel do not heat when blueing due to back then barrels were sodered together not welded if overheated they will split apart.
The Star Leader shotgun was indeed manufactured by Crescent Firearms, a company that operated in the late 19th and early 20th centuries. Crescent Firearms produced a variety of firearms, including shotguns such as the Star Leader model. The company was known for producing affordable but functional firearms for the mass market during its time in operation.
This would be a Sears Roebuck gun, probably manufactured c. 1910 by Meriden Firearms.
Manufactured by Davenport. sales@countrygunsmith.net
Ithaca Firearms manufactured the Lefever Nitro Special shotgun with serial numbers between 101600 and 119899 in 1922.