Australia's $50 note has been spruced up, with new security features and four bumps on each edge for the vision impaired, while maintaining the yellow colour which gives rise to its 'pineapple' nickname.
The Reserve Bank of Australia unveiled the design for the new $50 note on Thursday, which will be released into circulation in October.
As with the current design, the 'pineapple' features portraits of David Unaipon, an inventor and Australia's first published Aboriginal author, and Edith Cowan, the first female member of an Australian parliament.
As with the other new notes released in recent years there is a top-to-bottom clear window which contains a reversing number and other features.
There will also be microprint featuring extracts from Edith Cowan's maiden parliamentary speech and David Unaipon's book.
Governor Philip Lowe said, "The new banknote provides the opportunity to tell more of the rich story behind these distinguished Australians."
There are other design elements included to tell their stories, including shields from David Unaipon's Ngarrindjeri nation and a picture of the gumnut brooch which Edith Cowan had created to symbolise that entry into Parliament was a ‘hard nut to crack’ for women.
A patch with a rolling colour effect will also be included.
"Improved security and ease of recognition underpin the design of the new $50 banknote," Governor Philip Lowe said.
"With the release of the $5 and $10 during the past two years, we are confident the Australian public are becoming familiar with the new banknote security features."
The $5 banknote was the first denomination in the new series to be introduced. It was issued in September 2016.
The new $10 note went into circulation last year on September 20.
The remaining banknotes will be introduced in subsequent years, with the $20 expected to be the next cab off the rank.
The RBA said it has already been working with retailers and banknote equipment manufacturers to prepare ATMs and other machines which will need to authenticate the banknote, including releasing test notes so owners and manufacturers of machines can update their equipment if required.