I need more info,but i will take a shot at it lol. These guns were made under many names most would have a brand name and the name volunteer . If you have one that has only the volunteer name they are the most rare and getting very hard to come by. If your gun is in working shape and looks fair and is the one with volunteer only on it it could bring up to 2500.00 to the right collector.
1900's to 1990's
A custom fit Purdey double shotgun
Google.
A bolt action shotgun in 12 gauge.
Can't answer about "Volunteer" question. Please tell which model. Volunteer is not a model by Browning
It would be a matter of opinion but I would say the Winchester Model 37.
50-100 dollars
50-100 USD
Around 75-100 dollars.
You did not tell us what MAKE your shotgun is. The two 1895s that come to mind are a lever action Winchester RIFLE, and a Davenport shotgun, which had a prominent release lever right behind the hammer.
50-150 US Dollars
how much are they