Well, honey, that 20-gauge shotgun is worth whatever someone is willing to pay for it, but don't expect a fortune. As for its age, well, it's probably older than your grandma's favorite recipe. Lawson Arms Godfrey Illinois and Spain? Sounds like that shotgun has been around the block a few times, just like me!
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.
Can't be answered as asked
50-100 or so
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).
If you are asking about a Browning Auto-5 shotgun,then it was made in the year 1923,with the serial number that you have provided.