Rich yes "Tropical Trials at Innisfail, Queensland Oct 1955 - May 1956"
Vehicles involved Saracen, Ferret, Humber 1 Ton, Champ
As British Humbers go the last ones into service were mid 1955. The report refers to them as Humbers, but that may be a colloquialism for FV1601 as we know they were plated as Commers for you.
Might have a picture or two
