Having had a long chat to Roger at Avalon [who was flying it for Guy at the time], and there's absolutely no doubt that it's the mid-'60's VH-GKE in almost the same colour scheme.
I have a delighful slide stuck away in history's file somewhere of her sitting at Omkalai after a major inspection and re-paint around mid-'69.
Sadly the spare $200k [??] isn't there for me either!
G'day
