A very successful driver in SCCA events, Constantine drove his production Jaguar XK120 in east coast races in the early 1950s. He then progressed to more powerful machinery, winning the 1956 Watkins Glen GP in a Jaguar D-Type. The 1959 season was his most successful, Constantine scoring many wins in an Aston Martin DBR2, including the Nassau Trophy, to earn the USSC Driver of the Year award with Walt Hansgen. It was not surprising, therefore, that he was one of the local attractions in the inaugural US Grand Prix at Sebring in a rented Cooper. His career continued into the early sixties, the veteran finishing fifth, and winning his class in the 1962 Daytona 24 Hours.
(c) Who is Who by Steve Small, 2000