Hi VPCCP, Welcome to the community.

Ok some additional information here regarding Aussie notes.
Decimal paper notes Australia had $1, $2, $5, $10, $20, $50 and $100.
Decimal Polymers we had $5, $10, $20, $50 and $100. I'm sure there was never a polymer $1 but not sure about the $2. I don't think there was but there was a couple of years difference between the start of the $1 and $2 coins.

I'm hoping one of the note collectors can correct me on that.


The other thing to remember here is paper notes lost grade very quickly in circulation, because of that getting high grade examples can be an issue.
Enworb, Yes the $1 paper is nice but I always liked the $100 paper more, color and design wise. I guess it comes down to personal preference.