how much is my gun worth?

I have a Winchester Model 12 16 gauge, 2 3/4 chamber the s/n is 888821. Can anyone tell me how much it's worth?

your md 12 was made in 1941 and in good condition would bring 300-450 for a standard grade no thrills model in my part of the country,,mabey a little more depending how the collector or shooter sees the condition,,or in different parts of the country..
bigcurt