Low numbered issues (#1-#33) with colour printing are Australian versions. Issues #1-#20, whatever the pricing, are UK editions if there are no stories printed in colour. UK issues numbered #21 and higher have a 6d cover price, but need to be checked carefully to make sure they are UK editions. Australian issues #21 to #45 also have 6d cover prices, and a small number of issues for both countries have 8d cover prices (UK #15-20).