What is a 1987 3Rensho Super Record Export with Dura-Ace group from that era worth? It has Mavic Open 4 CD Rims and is in good condition. It also says Aerodynamics on it (I don't know if that is a model or what). I have done some looking and they seem to be very well respected frames, but I have no idea about value or reliability of the components. Any help or additional information on this would be greatly appreciated. Thanks.