Need Value of Benelli 12 GA>

Upfront, I have no gun to sell. I found a Benelli 12 ga. fishing a few years ago. Brought it home, cleaned it up and fired it. Sent the numbers to ATF; they called and said it would take a week to find the owner. Never heard back. One of my clients is the Chief of Police in my hometown of Boaz, Al. He took the numbers from the gun and told me three weeks later it wasn't reported stolen or used in a crime. Now it is mine, and I don't hunt. How is the value of an item found? I will need to list it as a possession. Uncertain if this is the right place to look for this type of help, but I would appreciate any offered. Never found anything worth a flip before.

Depending on which one. Like super black eagle, nova, super nova?

Depending on model is it up for trade maybe a green 706 or two

Appears to be a 12ga. duck gun, according to one of my lifelong drinking buddies. It is dressed in RealTree camo, it is a Benelli Super Black Eagle. Don't know how old. It has some wear, as if the owner enjoyed his game. It was in a case, washed up on the bank at one of my crappie holes. Took me two hours to finally go over and pick it up to see what it was. Ran ad's in the local paper, got no hits, that described this gun. I'm going to list in case, for insurance, if something happens to my home, like all the stuff. Really wish I could find out who it belongs to. Thanks for any help.

Should be able to get an ideal of value on gunbroker,or bass pro or gander mnt websites

Thank you for the leads, slandeerhunter. I will google them now. Thanks.

A brand new one cost 1499 and used one will go for about 700-1000 depending on condition. They are one of the best duck guns u can buy.