1890's.
"The Berkshire" by Meridan Firearms "Berkshire No. 3000" by Crescent Firearms Contrary to popular belief, not the same company.
The current Barrett Firearms does not make a double shotgun. Exactly how is your gun marked?
Check out gunshop.com,they got Lots of info on dbl barrel shotguns.
try e-gunparts.com
50-100 USD or so
Many companies have made firearms for the NWTF.
Depends on model and condition- not enough info to answer.
$100 to $250, depending on condition.
70-100 years
The Enders Royal Service double barrel shotgun was produced in the late 19th to early 20th century, primarily in the 1890s to the early 1900s. It was manufactured by the Enders company, which was known for crafting quality firearms during that period. Specific production years may vary depending on the model and variant of the shotgun.
150 dollars
The JStevens Arms Company Model 235 double-barrel shotgun was made from 1912 to 1932. However, there were no guns made by the company from 1916 until 1920.