Hi there I purchased 4 of these - they all have a different design. From what i can tell - they were released in 1 big set - is that right? I am finding it hard to find out much information. they have p20 on the front and are dated 2009. I found a set that was released with 20 different kookaburras in it - but can't see anywhere if they were released separately. any information would be helpful I will upload some pictures - sorry about the quality of them! thanks
The coins you bought are probably from the 20 coins set ie. someone has broken the set up and sold them coin at a time.