You are in a good area to move one of these along. The best out come for you would be a frame and fork sale , unless you found the right buyer who could see beyond the existing paint and just want a nice riding bike that looks good enough to ride and enjoy the way it is. I would say somewhere in the 300-350 range for just the frame and fork in this less than optimum market. I had mine done by Franklin Frame a couple of years ago after buying the bike in rider shape(complete) and riding it for a year. There are people out there that know these mid seventies Supers are nice bikes and will buy them and yours is a good size .