Not a Bombay Chev, although the coach built cab isn't standard - who would have ordered such a cab when mass produced pressed steel cabs had become the norm for mass production?
Edited to add: I have been assured it is not an Australian cab.
"1943-1945 Chevrolet Victory Cab Being Worked On Truck Factory Press Photo"
"1943-1945 Chevrolet Victory Cab Truck Factory Press Photo. Completed Victory cab with side curtains rolled up."