Australia Kangaroo FDC/Postcard Hybrid

I have always been fascinated by this postcard that someone sent from Australia to the U.S. back in 1993:



First, it's a picture postcard with the Kangaroo; second it has the 90c Australia Kangaroo stamp affixed with FDOI cancel; and third it is a conventional postcard valid for mailing, as the reverse has the following imprint:



They were apparently issued by Australia Post at the time. Does anyone know if similar ones are still issued today? It seems a rather novel approach of being able to send a friend or family member an international postcard and at the same time expanding one's collection with a stamp bearing a first day of issue cancellation.

Common:

It is a collecting discipline called Maximaphily.
Certain conditions have to be met
for the postcard to be a "maximum card"

If you can, change the thread topic to "maximum Card" or similar
for future reference.

I wonder how this works in terms of the postal authority knowing what stamp is used for payment of postage on the article versus the "collectable" stamp that is, in effect, precanceled before it gets put into mailstream? I would think it would put a "wrench" in the sorting and cancelling machines to determine which side of the article gets "read" as having valid postage.