Get yourself legal and take it into a gun shop yourself. They actually HAVE BOOKS that will indicate the date of manufacture, and a sort of a "Blue Book" for the beginnings of valuation. It's condition will vary the value, of course.
You can find what your used shotgun is worth by taking it and having it appraised at your local pawn shop. You can also have it appraised at a gun dealer shop.
i have a model 940 E 410 shotgun how old is it and what is it worth
I need butt end of a duble barrowl shotgun 1017 sears.
you can find that info at proofhouse.com
How can you find out the worth of an old policy?
Find someone who reloads shotgun shells. They will relieve you of your inventory.
You lick it.
No more than 100 USD
gun show, gun shop
You will have to call Browning with the serial number to find out.
Blue Book of Gun Values
10-1000 USD depending on specifics.