Australia had what appeared to be a very short run of it’s own cardbacks before switching to the more popular Canadian card with “offer not available in Australia and New Zealand” sticker on the back. For more information on the sticker variations, please refer to the article: Collector’s Blog on Foreign Sticker Variations
The distinction on the front is the yellow offer flag that says “Collect them all”, and the distinction on the back is a block of text replacing any mention of vehicles or promotional offers. So far only a handful of characters featuring the Australian cardback have surfaced, but it’s possible they made all 12 of the first series. So far 16 different figures with the “offer not available” sticker have been found, although it would make sense if all 23 first and second series figures were released with that sticker.