Blackhawk Farms in 1975, either 5/17 or 7/6.
Bob Bowe reports that the "Driver is the late Don Wands, who was a very active proponent in establishing a new class (isn't that unique!) called S2000. This car, a Beach Mk 4B serial number 103, while marked 'D', may have been an early example of an S2000. Unfortunately, Don passed away just as S2000 was taking off."