Even if these transfer sheets didn't say "Australia" on them, you could easily tell that was their country of origin by the subject matter. The idea is that you rub down these symbols on the appropriate dates of your calendar, as a reminder of important events.
Photo courtesy of Robert Kerton
I don't know if a calendar was provided; a packet back might be too small, but often in these cases you would be invited to send off for an item, & a wall calendar would certainly fit the bill.
Original photos courtesy of Robert Welk
The appearance of other cereal mascots suggests this promotion may have been available in more than just Coco Pops, but perhaps they're just examples of simple product placement.
The "Action Transfers Products" logo confirms that this promotion was printed after the purchase of Letraset by Esselte; Letraset Consumer Products was wound-up on 19th October 1982.
Picture Credit: The SPLAT Scan Archives — Robert Kerton — Robert Welk
© Tom Vinelott 2020