Your Iver Johnson double barrel shotgun can be dated by the words hammer forged.This places production from 1936-1941.these were well made mass produced field grade shotguns of high quality.
how old is my Iver Johnson single barrel shotgun champion model 3578 C with a 12 gauge choke bore barrel and lug forged in one and approximate value .
Iver Johnson is most often associated with the HERCULES trade name. sales@countrygunsmith.net *If that statement marked on the gun actually says "barrel and lug forged in one piece" it is a Stevens. If it says "barrel and lug forged in one" (exactly the same except no "piece") it is by Iver Johnson Arms and Cycle Works.
I own a Greenough dimascase forged barrel shotgun. I'm not familar with the stampted lam.
1864-1935
Made by J Stevens Arms between 1920 and 1948.
Barrel that has lands and grooves made by the barrel blank being hammered on a mandrel
R try Cornell Publications
What year is 16 gage single shot Springfield barrel and lug forged one piece inside barrel wwdt
Springfield manufacture by U.StevensCompany G.A.P.T doubvle barrel dual trigger Chicopee Falls, Mass. USA Proof tested 410 gauge selected forged steel
Diamond Arms was a trade name used by Shapleigh Hardware Co of St Louis from the late 1800s to about 1950. The guns were made by G. B. Crandall, Harrington & Richardson, Hopkins & Allen Arms, J. Stevens Arms Co, and probably a few others. A 410 single shot is most likely a Stevens product. If that statement about one piece barrel actually says "barrel and lug forged in one piece" it is a Stevens. If it says "barrel and lug forged in one" (exactly the same except no "piece") it is by Iver Johnson Arms and Cycle Works.
I would have to say $100 I just bought one a few weeks ago for that price. Does yours have a model number on it? My doesn't have one anywhere that I can see.
50-175 usd