Michael,
that's great - and quite funny - here are the exact details: venue: Finland, Keimola Circuit, Helsinki; date: June 9, 1968
#10 Howden Ganley (NZ), Brabham BT-21
I'd like to send the original photo to him so if you can drop me a line (private message or email, details are shown above...somewhere), that would be nice.
Thanks!