If you’re an Aussie coin collector, or just someone fascinated by the stories stamped into our currency, here’s a good chance you’ve come across The Purple Penny. Run by long-time collectors Mark and Kathryn Nemtsas, this specialty business has become a trusted name in Australia’s numismatic community, helping collectors buy, sell, store, and protect rare coins, banknotes, and collectables.
From pre-decimal treasures to Commonwealth-era coins, from error coins to PCGS-graded pieces, The Purple Penny is built on decades of research, passion, and hands-on knowledge. For new collectors and seasoned experts alike, it’s a go-to destination for quality items and reliable advice.
From hobby collectors to respected experts
What began as a shared passion for collecting has grown into a respected business and an important voice in Australia’s numismatic space. Mark and Kathryn are more than sellers—they’re educators, writers, and long-time contributors to the collecting community.
Their deep expertise stretches across:
- Australian decimal and pre-decimal coins
- Commonwealth and international collectables
- Error coins and specialty mis-strikes
- Long-term coin storage solutions
- PCGS-graded investment pieces
A key part of their business is helping collectors store their coins safely. Many storage products sold globally contain harmful chemicals or PVC that can damage valuable coins over time. The Purple Penny sources and sells only premium, safe, long-term storage solutions—products they personally trust.
Beyond their online store, Mark and Kathryn also write for the Australian Coin Collecting Blog, contribute to the Australasian Coin and Banknote Magazine, and are active members of multiple numismatic societies. They attend coin shows across Australia and can often be spotted chatting with collectors under their well-known Purple Penny banner.
“We’ve spent years researching coins and helping collectors protect the pieces they love. Sharing that knowledge is part of what makes this community so special.”
Running a niche business with precision
For a business built around accuracy, authentication, and careful handling, the behind-the-scenes admin needs to be just as reliable.
With a small team managing customer service, writing, online orders, grading submissions, and show appearances, Mark needed a payroll system that would take as little time as possible—without compromising compliance.
After three years with Payroller, it’s become one of the simplest tools in their workflow.
How Payroller helps The Purple Penny stay organised
“Payroller allows us to enter hours from our time tracking system, makes emailing payslips easy, takes care of STP reporting and allows us to handle salary sacrifice easily.”
Here’s why Payroller fits perfectly with a small, specialised business like The Purple Penny:
- Works seamlessly with time tracking – Enter hours directly without juggling spreadsheets.
- Payslips done in seconds – Emailing staff is fast and automated.
- STP reporting sorted – ATO compliance handled behind the scenes.
- Salary sacrifice friendly – Easy for businesses offering flexible payment structures.
- Ideal for small teams – “It’s low cost, it’s online, it’s easy to use.”
The only improvement Mark hopes to see? A smoother experience around BEAM payments so they can run payroll without the extra prompt.
“For a very small business like ours, simplicity matters. Payroller is low cost, accurate, and just works—which is exactly what we need.”
— Mark & Kathryn Nemtsas, The Purple Penny Pty Ltd
Payroller user since 2023
Ready to spend less time on admin and more time on what matters?
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Get in touch
Web: thepurplepenny.com
Email: mark@thepurplepenny.com
Phone: (02) 6543 3047
- Instagram: @thepurplepennycoins
- Facebook: @thepurplepennycoins