The 23rd edition of the Blue Book of Gun Values refers to Adco Sales Incorporated, located in Walburn, Mass. But AdCo had nothing to do with these shotguns. They import semi-automatic shotguns made in Turkey. Diamond Arms Co. was a trade name used by Shapleigh Hardware of St Louis, MO, on shotguns imported from Belgium c. 1880-WWI or made by Stevens and Iver Johnson of Fitchburg, Mass., from about 1900-1940.
No published history known.
Western Arms was a division of Ithaca. These guns were manufactured between 1929 and 1946.
Savage Arms is the manufacturer of Springfield Shotguns.
American Arms imported Spanish shotguns manufactured by Zabala Hermanos, Lanber, and Indesal. Italian shotguns were also imported and mfg. by Stefano Fausti (Models Silver, Waterfowl, and Turkey Special).
It was a corporation, so it was owned by the stockholders, and manufactured guns in Silver Creek, New York.
Delphian Arms Co shotguns distributed H&D Folsom Sporting Goods were either manufactured by Crescent Arms Co (Norwich, CN, 1892-1931) or imported from Belgium. The same name was also used by Supplee-Biddle Hardware on Fulton Model shotguns manufactured by Hunter Arms Co. (Fulton, NY, 1890-1945).
Adco has no connection to your shotgun. They import semi-automatic shotguns made in Turkey. Diamond Arms Co was a trade name used by Shapleigh Hardware of St Louis, MO, on shotguns imported from Belgium c. 1880-WWI or made by Stevens and Iver Johnson from about 1900-1940. A single shot with serial numbers is most likely an Iver Johnson Champion.
Diamond Arms Company: Trade name used by the Shapleigh Hardware Company of St. Louis, Missouri on shotguns they retailed. Probably manufactured by J. Stevens Arms, but possibly a Belgian import. Look for an oval around "ELG*". If it has it, it is Belgian, but most of these imports stopped coming over when WWI started.
Central Arms shotguns were made by several manufacturers, but that patent date says J Stevens Arms and Tool Co.
in the sameplant as berrettas
Side-by-side shotguns are still manufactured.