you will find the answer in www.shotgunworld.com , click on "gun ID and value". you will need to be member to get the answer.
1929 if it has the original barrel it will be date code stamped. Check the manufactured date link on the Remington Society of America for details.
describe the type of shotgun and recheck the serial number
Model designation
This shotgun is in the neighborhood of 100 years old. There is fairly extensive information online available on this shotgun.
$250-$350
Hopkins & Allen
If it is a double, remove barrel and you will see it along with serial #.
nitro hunter shotgun single barrel with exposed hammer stamped belknap hdwre and mfg serial 5516
There were no serial numbers stamped on the original Winchester Mdl. 37, single shot shotgun.
50-100 or so
Can't be answered as asked
First of all describe the gun. Is it a revolver, or a shotgun? A revolver has a grip but so does a shotgun (actually a for end).