Hello, continuing the theme of two stamps that look the same but are not. These two were issued in coils in 1971. They had two types, known as Type I and Type II.  Type I, the left hand stamp, has a much thinner typeface for the word Australia and a thinner 2 in the value. Quite easy to see. Which one do you have?   Type I is SG 465a with a catalogue value of just 20p (GBP) while Type II is SG 465b with a catalogue value of £1.25. Cat value is not everything of course but nice to know which is which I think, especially if you are in a stamp exchange. 

My apology,  a little plug for the cddstamps online store cannot be missed. We have a few pairs for sales in the store, at the time of writing, and the same goes for the Waratah stamps I showed the other day.   We also have some 8000+ Australia stamps from which we hope you might be able to fill a few gaps in your collection.  And, all new listing have both SG and Scott catalogue references and reason for issue description so it will be easy for you to find a specific stamp that you might be looking for.   

Enough said  just visit the store at https://www.hipstamp.com/store/cddstamps

Enjoy your stamps   Best wishes   Michael