The Graftek was another super innovative bike from the 70s, Raced by Howard, Stetinas, Doughty, Kingsbury, and many others at the top level in the US. I don’t know of any earlier graphite/ carbon fiber bike that predates it. There were problems with the steel lugs that were glued to the graphite tubes if memory serves. I had thought they were all collected back by Exxon and destroyed for liability reasons, but I must be confusing that with other experimental products of the day. Hope the new owner treasures it.