There are so many models and configurations and little details that could add or detract from it's value, you will need to post pictures for us to come up with a value that is even close.

Without pictures or at least a very detailed description, it's worth somewhere between 200 and 2000 dollars.

"You cannot invade mainland America. There would be a rifle behind every blade of grass"
~Admiral Yamamoto~

When the people fear their government, there is tyranny; when the government fears the people, there is liberty. ~Thomas Jefferson~