Historic race B (pre 61 frt engined GP cars) and race F (pre 75 F-1 3.0L nonsupercharged). So a double winner! In the pre 61 class Duncan drove a Lotus-Climax 16 and he drove his Brabham BT33 in the pre-1975 three-litre F1 race. This marks the second time that Duncan has won at Monaco with the Brabham, the same car that Brab's father, Sir Jack, won the South African GP at Kyalami in the cars debut in 1970.
link and
wiki
It would seem that Duncan has all but recovered and is to be congratulated on his victories!!