Stevens 335

Can anyone tell me where I can find information on this double barrel. My grandfather gave me this gun and I can't seem to find out anything about it other than it was made in to seperate production runs. One being 1912 to 1931 were they made 67,500, the other 1926 to 1935 were they made 2,000. How can I tell which run this was made in? How about a value, I can't find that anywhere? Thanks, Alan