single barrel was probably an Iver Johnson. There were double barrel models made probably by Iver Johnson and possibly Stevens. They were made under contract after WWI for Sharpliegh Hardware in St Louis. This was common practice as Iver Johnson would put your Company name or logo or P/N on anything they made . Iver Johnson originally made bicycles and merged into firearms. Their Champion guns were sold with as many as 20+ different names on them. I have 6 different guns and they all resemble each other very much. Am looking for an extractor for a 12 gague single Champion.
What the value is of a double barrel 16 ga shotgun by stoeger arms corp serial no is 112957?
Although I am not an expert on Stroger Arms Corp I do not believe they actually manufactured any firearms themselves. They were an importer of firearms the majority of which originally came from Europe, more recently Brazil and Turkey. To attempt to put a value on this shotgun one must know a lot more about it and its condition. My observation has been that most firearms marked "Stroger Arms" have been of good quality and were probably made by well known Europen manufactures. My advice would be to see what a couple of gunshops would give you for it and then assume that they would like, and hope, to sell it for twice that figure.