I found this beautiful bike on gumtree for 35 pounds a few months ago. I think it's a 1950's Raleigh Superbe. It has an old wrights saddle and everything (including the dynamo) works. Everything is original I think apart from the handle grips (horrible... they need to be replaced with leather grips, which I will do) the tyres and inner tubes, and possibly the saddle. Could you tell me how much it's worth?