40 (AD) RAASC DZ patch?

[Chacal]

Good afternoon

It has been nearly two years since I last attended the local car boot sale - and going by this morning it’ll probably be another two years before I go back. I thought, however, that my only purchase might be of interest: from looking online I’m thinking this is a DZ patch for “40 (Air Dispatch) Platoon Royal Australian Army Service Corps” dating from the 1960s - early 70s? As can be seen it has been cut from a shirt/flight suit/coverall in a grey-green material, and measures 3 x 3 14 inches. Any additional information would be, as always, greatly appreciated.

Caveat: once ID is confirmed/corrected it will be offered for swap or sale, initially on the Forum.

Thanks for looking

Graham