Nitro King was a Sears Roebuck brand name made by Crescent Arms, 1908-1917.
The 12 gauge King Nitro number 3411 is likely a vintage shotgun manufactured by King Nitro. It may have a 2 3/4" chamber and be of good quality, but specific details about its features and history would require further research or inspection by a gun expert.
As I saw in other faq`s answered about King Nitro shotguns, they were made by Sears,Roebuck co. We need to find those other answers and correct them. Sears Roebuck never made any guns unless you count those manufactured by their subsidiary company, Meriden Arms from 1905 to 1915. Nitro King was a Sears brand but King Nitro was a trade name distributed by Shapleigh Hardware of St Louis. The guns were made by W.H. Davenport, Iver Johnson, J. Stevens (model 315 double barrel), and unidentified Belgian manufacturers.
You have already identified it as a Shapleigh's King Nitro. Shapleigh Hardware was in St Louis Missouri from the mid 19th century until the middle of the 20th. Their King Nitro guns were manufactured by W.H. Davenport and later by Stevens/Savage.
Not sure if this is your gun, but Leader Gun Company was a trade name used on shotguns retailed by the Charles Williams Stores, Inc. of New York. Most likely manufacturer would be Crescent Arms, Norwich, CT. "Nitro" would imply proofed for smokeless powder.
Browning Arms
American Nitro: Trade name used by H. & D. Folsom Arms Co. on shotguns. Available at http://www.hoosiergunworks.com/catalog/cross_reference.html Hope This Helps.
Both 'King Nitro' and 'Central Arms Co' are trademarks of the Shapleigh Hardware Co, which was a major catalog retailer from the late 1800's well into the 20th century. The shotguns marketed under that name were made for Shapleigh by different companies, notably Davenport Firearms, Crescent, Hopkins & Allen, and Stevens. We'd have to see the shotgun to determine which manufacturer actually made the shotgun. www.countrygunsmith.net
I was informed that' some Morsel shotguns were made by Navy Arms Co.
no answer but i have a king nitro 22. long rifle used in WWI/WWII has no information it took quite a hit in the chamber though it was handed down to me from my great grandfather.
50-150 USD
King Nitro was a trade name used by Shapleigh Hardware of St Louise on guns made by Crescent Firearms and J. Stevens Arms.
King Nitro was a trade name used by the W.H. Davenport Firearms Company, of Norwich, Conn., on shotguns made for the Shapleigh Hardware Store of St. Louis, MO. They were made roughly between 1890 and 1915. It should be a single barrel side hammer gun with 26"-36" barrels and extractors. Barrels were blued, with a case hardened receiver and walnut stock.