This particular head was used on SBC 350 engines produced from 1968 through 1970 which would indicate that the cast year was almost certainly 1968.
Because it fulfilled all requirements for night lighting, the airport was a useful place early in the war to train transport pilots & to conduct training exercises. 26mm 3 section aluminum alloy legs adjust to 25, 50, and 80-degree angles to enable extreme low angle photography.