I value your opinions on this Aussie 1984 $1 dollar mess

Dear Community

This coin weighs 9 grams and is 25mm in diameter.

Please tell me what you think what the heck is going on here. Thanking you in anticipation.

This is simply a very common  40 year old coin with PMD. (Post Mint Damage). Nobody can possibly say exactly how this damage came to be.

N#2288

Yep, harryg is right. This coin is worth exactly 1 Australian dollar.