My crystal ball says you have a break-open single shot. Value is about $25 if it is only useable as a parts gun or maybe $100 if nearly like new.
36GA
50-125 USD
About $100.
1940's
Less than $100.
$100-$125.
Would like to know how old my harrington richardson arms 16 ga shoot gun is worth
Try Gun Parts Corp
Seek the services of a good gunsmith
Under $100.
1930's-40's.
Unaware of any model by that number. Do you mean 11-48?