After searching this site for the same Q&A ( I own an American Arms New York 12Gauge) I think its safe to say that these guns dont hold any great monetary value, 150-250 dollars, but they are a great part of our American Heritage and should be treated as so.
Best lef to a gunsmith
No. What would the company that produced the finest American double barrel shotgun want with a utilitarian import?
50-125 USD
What isthe value of a Stevens double barrel hammer type 12 gauge shotgun Model 235 and when was it made?
Go to Google, select IMAGES from the toolbar, and for search term enter Iver Johnson double hammer shotgun.
I have two 1878 Jas Parker & Sons double barrel shotguns.
Turn of the century
25-150 usd
You will need a professional appraisal
50-100 USD
Seldom go beyond 150 USD
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.