I'd hazard a guess at 1940 or 1941 Chevrolet 3 ton Modified Conventional Pattern with Holden manufactured body. further more accurate data can be obtained with the chassis and engine number.
Here's an original photo from the AWM
__________________
Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"