Probably not much unless certified by PCGS or PMG. Sequential doesn't add value for modern notes.

Sequential for modern banknotes doesn't add value.

Modern banknotes, except if in EXCELLENT condition and/or with specific serial number, aren't generally worth more than face value.

Hello and welcome!

Here's more information on what you got:
https://www.coinsandaustralia.com/coins ... =cuds&id=3

Hello!

Could you post some pictures? Will be easier to help. Most $50 banknotes are worth face value unless rare serial or in pristine condition,

https://www.coinsandaustralia.com/bankn ... ecimal.php

Picture didn't work. Reply to this and use the Attachements tab under your message. It should upload correctly.

Probably worth $1 to $2. Not above melt value. This coin is worn and seems like bent.

Hello. You can find it here:
https://www.coinsandaustralia.com/token ... ell&id=127

Is it a penny or halfpenny?

In honour of our women's national team, the Royal Australian Mint have teamed up with the ICC (International Cricket Council) to release a limited edition $2 coin. This $2 coloured coin features an image of a cricketer poised to bat, surrounded by the colours of the ICC Women's T20 World Cup logo.

New 1 dollar - Qantas centenary
5 millions will be released starting February 2020.
http://www.coinsandaustralia.com/coins- ... at=decimal

Hello! Could you post pictures of it? Will be easier to grade.
http://www.coinsandaustralia.com/coins- ... rge-V&id=6