Picked this up at a thrift store. I'm not a road bike guy, and it's a little too tall for me, so I'll probaly clean it, replace the tires, and flip it. Frame says Tange Cromoly, and has Sugino cranks, Suntour down tube shifters, and Dia-Compe brakes. Handlebars are black anodized with black wrap, and are stamped world custom, Japan, next to the stem. Any ideas what it might be worth?