1972 Line Seeker CF/Steel/Al race bike.
It's the only example that I had found so far that is original, intact and rideable. Only things I had to replace was the brake levers, saddle, brake cables and pads and rims on the wheels. The only other one I found was owned by a bicycle museum and it was toast.
#22 of supposedly only 300 made (hand made in the designing engineer's residence in 1972). Before Exxon bought the design from the engineer and modified to become the Exxon Graftek.