Pocket Galleries: Banknotes and Coins That Redefine Currency Design

Banknotes and coins rarely get the attention they deserve as design objects. Most of us flick past them, yet the best currencies double as miniature galleries packed with portraiture, native fauna and patterns worth a closer look.

Australia wrote the opening chapter in polymer banknote history. The Reserve Bank of Australia and CSIRO released the country's first plastic fiver in 1988, and the rest of the world has been playing catch-up since. Every denomination is printed on polymer at Note Printing Australia in Craigieburn, on Melbourne's northern fringe.

Coin design tells a similar story of place. The Royal Australian Mint in Deakin, Canberra, has shaped the country's decimal coinage since 1965. Stuart Devlin designed the reverse of the entire decimal set, and his lyrebird on the $2 has remained an enduring favourite. Around the rims of everyday coins, you can spot the echidna, platypus and sugar glider, making loose change feel like a portable field guide.

Currency lends itself to archiving, exactly the sort of work a visual curation platform was built for. Collectors upload high-resolution scans to highlight guilloché engraving and colour-shift foils, and credit flows back to the discoverer. Anyone keen can browse active contributors on thethingswelike.org/users and pick up a few new follows.

Australia's polymer banknote legacy

The Australian $5 carries a small AC/DC reference hidden in its micro-print that locals find endearing. The $10 celebrates Dame Mary Gilmore and Banjo Paterson, while the $20 features Mary Reibey and John Flynn alongside a quiet nod to the Royal Flying Doctor Service. Each note rotates its colours sharply across denominations, so a barista in a Sydney café or a teller in Broome can confirm value at a glance. The polymer carries a faint rustle Aussies call the straya snap.

The transparent window in each note is a quick tell. Hold an Aussie fiver to the light and a clear panel shows a flying swan; the $100's panel is shaped like a possum. These elements were revolutionary when introduced and remain a textbook case in function-driven design. Melbourne designers visiting Note Printing Australia's visitor centre call the window the most copied feature in modern banknote design.

Native fauna on Australian coins

The reverse of every circulating Australian coin wears a native animal, an unofficial national roll call. Stuart Devlin's 1964 designs still appear on the 5c (echidna), 10c (lyrebird) and 50c, which carries the Commonwealth Coat of Arms. Even though the 1c and 2c coins were withdrawn in 1992, their detailed engravings still turn up in collectors' forums.

More recent commemorative issues have pushed the craft further. The 2000 Sydney Olympics series used vibrant colour and irregular shapes to mark each of the 28 sports, and later releases have honoured the Royal Tour and the Australian Women's Cricket team. Many are auctioned at suburban numismatic meets in Adelaide and Perth.

Portraiture and pattern on international banknotes

Beyond Australia, several countries have turned banknote design into a national calling card. The Swiss franc is legendary for its bold vertical layout, oversized numerals and typography-first aesthetic. Canada's polymer series, released in 2011, leans into landscape with translucent maple leaves and portraits from under-represented periods of history.

The Bank of England has long championed engraving as art. The current King Charles III notes, printed on polymer since 2024, feature refined intaglio portraiture alongside intricate guilloché patterns and tiny allegorical creatures in the windows. In Japan, the new series leans on ukiyo-e influences, with deep indigo gradients and stylised wave patterns referencing Hokusai. Brisbane and Sydney designers often point to these examples when pitching how far currency design has moved beyond old green-and-cream sterotypes.

Hidden details and security as design

Modern banknotes hide entire engineering projects in their margins. Micro-print resolves into full paragraphs under loupe. Optically variable ink shifts from emerald to magenta when tilted, and intaglio engraving leaves raised lines. Australia's $50, released in 2018, weaves in a reference to author David Unaipon and Edith Cowan, the first woman elected to an Australian parliament, along with a wattle sprig in raised ink that's become a small celebrity on social media.

Outside Australia, the new £10 from the Bank of England features a full quote from Jane Austen's Mansfield Park around the King's portrait. The Singapore $50 carries micro-text celebrating its founding leaders, and the Norwegian krone is famed for its pixel-mosaic background. The €5 carries architectural windows and bridges rendered as if drawn by a single calligrapher's hand. These notes are technical benchmarks disguised as pocket change.

Coins that celebrate local identity

Coins tell a parallel story, and a few nations have made their small change worth a second look. The UK £1 coin, redesigned in 2017, carries a hidden hologram of a rose, leek and thistle that resolves when tilted, and the 2019 redesign introduced a dodecagonal shape. New Zealand's 50c depicts the HMS Endeavour, and many Kiwi coin series celebrate rugby and the silver fern.

Australia's $2 coin has become a cult favourite among coin designers. The red kangaroo design has appeared on jewellery and design mood boards. A 2023 release honoured Indigenous painter Albert Namatjira, and a 2024 release marked 60 years of decimal currency. Designs are reviewed at the Royal Australian Mint in a public forum drawing design students from the University of Canberra, feeding into design awards in Melbourne and Sydney.

Currency as inspiration for designers and makers

Designers in all disciplines pull from currency for inspiration. Pattern-makers trace guilloché lines for textile work, type designers reverse-engineer the geometric numerals, and illustrators study engraved fauna. Some Australian studios produce hand-engraved commemorative medallions for community organisations in Hobart and Geelong, inspired by the older Devlin reverse set.

Curators on image-led platforms treat currency as another category of visual culture. Posts retain their source, credit the discoverer and build a browsable history of taste across regions. Designers often cross-pollinate traditions: a recent community submission looked at traditional forging in Southeast Asia, with a thoughtful walkthrough of Penang's Malay blacksmiths as a touchstone. That same attention to craft often translates into plate tooling and small studios keeping these traditions alive.

Practical reading for currency design enthusiasts

• Pick up a polymer fiver next time you grab a flat white in Melbourne and inspect the wattle on the $50, an easy entry into Australian banknote design.
• Visit the Royal Australian Mint in Deakin for the exhibition on Stuart Devlin's 1964 coin submissions.
• Grab a magnifier from a servo or stationery store and explore micro-print under a loupe.
• Follow Australian note designers on social media, where many share work-in-progress shots of intaglio engravings.
• Start a small commemorative $2 collection; even a handful of coins becomes a snapshot of national conversation.
• Photograph circulation notes and coins during regional trips around Broome, Cairns or Hobart and post them to a curation community.

Currency design sits at the crossroads of engineering, art and national storytelling. If you've spotted a brilliant banknote or coin in the wild, snap it, tag the country and add it to the archive. Visual culture of money belongs to everyone holding it.