superstrutter

I have an antique fly rod I'm trying to find out the value of. I'm thinking about selling it. It is a Single Cross Built split bamboo fly rod made by the South Bend Quality Bait Company. It is a three piece 8' rod with an extra tip. It is in excellent condition. No marks or wear on the rod. The handle is in great shape also. It has its original sleeve and metal tube. The rod was purchased sometime between 1935 and 1940 by my great uncle. The only markings on the rod is the number 7143. When I say its in excellent condition, I mean it. Can anyone help me out?