Member ACCC (Australian Commonwealth Collectors Club of NSW) 22 Dec 2018 11:28:34am
These are complete sets of different perforations, the above are 14 x 14¼ and 14¼ x 14 and below 14 x 14¾ and 14¾ x 14 (not scarce but it took me 3 years to complete it).
Rob
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"Specialised Collector of Australian Pre-Decimal & Decimal Stamps"
You seem to have missed the Matthew Flinders $1 1973 issue. I have a couple of used ones but have not yet found a mint (probably because most dealers and collectors got the original issue but overlooked the later issue).