I have a 1975-76 elan aluminum frame bike in original condition. I built the bike I believe in 1976. Gold in color with silver lugs. All decals are intact. Suntour cyclone rear derailleur, sugino front gear set. It has diacomp brakes. Overall very good condition. Tires are not in good condition. I believe I last rode it in maybe 1984. Whats it worth? Thx