Sharpie. That was A4-202. The RAAF generously converted it to a Pulis Boi Haus on June 11, 1965, when the aircraft was exactly one year old.
I still smile at the RAAF dude in A4-164 on October 18, 1978 who mistook Eliptamin for Telefomin and broke the balus trying to get back out. The recovery cost by Chinook well and truly exceeded a replacement aircraft cost.
Way back when even you were in short pants, the RAAF mistook a mission strip in the Bena - Finintigu??? - for Goroka. The Gillies boys painted "Finintigu" (??) on the roof of the Bellman hangar in Goroka, which the gendarmes and the judiciary took a dim view and fined them for their efforts!