Your recall appears to be spot-on. In the late 50's and early 60's the NZIGP ran a handicap race after the Grand Prix, perhaps to let some of the exit traffic clear while the diehards watched another race. Waiting for the winners' parade to clear the track after the 1961 GP was the field for the Sports Car Handicap Race.
The second and third cars in the line-up are the Jarvie-bodied Ford 10 Specials of Ganley and S(Steve?) Norrish, followed by Pat Fafeita's Healey Sprite.
Car 124, the limit man, was K(Ken?) McLennan in the 'Picalo Riley". Does anybody know anything about this car? It doesn't look familiar and I don't recall a mention of it anywhere else.
There are genuine(?) Bucklers in the field, Smyth Judd and Simpkin, but this is only an enlargement of a larger slide and I cannot identify many of the cars, even with a list of the handicaps and a lap chart. Howden ran the Lotus XI in
the Sports Car race, and aslo presumably won the Ultimate Ekco Handicap in it as well, but did he or his father run the Ford 10 Special in the above race?
Stu