When the C130A's came from the USA, it was the practice to onloy put the Kangaroo on the fusalage.
If you look at any RAAF aircraft in the late 50's that was the norm. By the early 60's it was kangaroos on the wings too.
The A model in the jeep photos was the first we got and it would have been late 50's and early 60's because there are no pylon tanks fitted.
This aircraft is now buried at Richmond as it was damaged in a bad storm, but by then it was being used as a loading trainer and had nothing except the fusalage left.
Regards
Col