Complete Guide to the 2021 Australian $100 Note – Full List, History, Value & Collectors’ Price Insights

The 2021 $100 Australian banknote remains one of the most circulated and valued denominations in the country’s modern polymer currency system. As part of the Next Generation Banknote (NGB) series, it brings together enhanced security features, modern design, and historical representation of significant Australians. Though commonly used in daily transactions, certain 2021 $100 notes carry unique value for collectors, investors, and numismatists.

This comprehensive guide explores everything you need to know: design, historical background, serial number variations, market value, price guide, and tips on identifying rare or premium-grade notes.

📜 Historical Background of the Australian $100 Note

Timeline:

The $100 note pays tribute to:

• Dame Nellie Melba – an internationally acclaimed opera singer.

• Sir John Monash – a celebrated civil engineer and military commander.

🖼 Design & Symbolism of the 2021 $100 Note

Front Side – Dame Nellie Melba

• Portrait of Melba from a 1904 photograph

• Background imagery: opera house curtains, sheet music from Puccini’s La Bohème

• Melba’s signature and microtext biography

Back Side – Sir John Monash

• Portrait of Monash in military uniform

• Construction blueprint and surveying tools

• Depictions of war service and engineering feats

Polymer & Security Features

• Rolling colour effect in the number “100”

• Clear window with dynamic images

• UV light patterns

• Tactile feature for visually impaired

• Flying bird, reversing images, microtext

• 3D fan motif in the window

🧩 Complete List of 2021 $100 Note Serial Prefixes

What Is a Serial Prefix?

Each $100 note comes with a two-letter prefix followed by an 8-digit serial number. These prefixes are used to track batches and identify limited or special editions.

Common 2021 Prefixes:

🔍 Fancy Serial Examples:

• 00000001 – Extremely valuable (first note of the batch)

• 88888888 – Considered lucky and collectible

• 12121212 – Repeating pattern

• 20211225 – Date of Christmas 2021 (collectible for date collectors)

💰 Value & Price Guide for 2021 $100 Notes

Factors That Influence Value:

• Condition (Used vs. Uncirculated)

• Serial Number (Fancy, low, radar, ladder)

• Prefix (First/Last batch, Replacement)

• Print Errors (Misprints, double print, cutting issues)

• Rarity (Limited circulation issues)

Market Price Table (AUD):

✅ Note: Values are based on trends in 2024–2025 auctions and collector markets.

🔎 How to Identify Valuable 2021 $100 Notes

1. Serial Prefix

Look for EA21 (first) or EZ21 (last). These are not widely circulated and carry collector value.

2. Fancy Numbers

Patterns like:

• Radar: 12344321

• Repeaters: 12121212

• Solids: 11111111

• Ladders: 12345678

3. Error Features

Printing anomalies increase note value exponentially. Examples:

• Misaligned holograms

• Missing serial numbers

• Ink smudges

• Foldover print errors

4. Condition Grading

🏦 Where to Buy or Sell $100 Notes (2021 Edition)

Trusted Marketplaces:

• eBay Australia

• Noble Numismatics

• Downies Collectables

• Facebook collector groups

• Coin/Note fairs across Australia

Tips for Selling:

• Photograph both sides in daylight

• Describe condition, serial, and prefix

• Highlight rarity or errors

• Use plastic sleeves for safety

📦 Storage and Handling Tips for Collectors

• Always store notes in acid-free polymer sleeves

• Keep them in low-humidity, dark places

• Use gloves when handling high-value notes

• Avoid folding or exposing to UV light

• Label each with prefix and serial in catalog

List of FAQs About 2021 Australian $100 Note

The 2021 Australian $100 note is one of the most advanced and secure banknotes ever produced by the Reserve Bank of Australia (RBA). It is part of the Next Generation Banknote (NGB) series, a decade-long project designed to enhance durability, security, and accessibility for all Australians. Featuring Dame Nellie Melba, the world-renowned opera singer, and Sir John Monash, an engineer, military commander, and national hero, the $100 note blends modern innovation with national pride.

1. What is the 2021 Australian $100 note?

The 2021 Australian $100 note represents the latest upgrade in Australia’s currency series. Although officially released on 29 October 2020, most print runs continued into 2021, which is why collectors and the public refer to it as the 2021 note. It is the highest denomination in circulation and the final note to complete the RBA’s Next Generation Banknote program. Made of durable polymer material, it combines security, artistry, and functionality in a modern design.

2. Who appears on the 2021 Australian $100 note?

The note features two iconic Australians:

• Dame Nellie Melba (Front): A legendary soprano and one of Australia’s first international celebrities.

• Sir John Monash (Back): A renowned engineer, scholar, and World War I general, recognized for his leadership and contributions to engineering and civil society.
  Their portraits represent Australia’s achievements in culture, innovation, and leadership.

3. When was the 2021 Australian $100 note issued?

The note was first introduced on 29 October 2020, with production continuing into 2021. Hence, notes printed or released in 2021 are categorized under the 2021 series of the $100 denomination.

4. What are the design features of the 2021 Australian $100 note?

The design retains the signature green color and general dimensions of earlier notes, but introduces modern design elements such as:

• Clear top-to-bottom window with dynamic holographic effects.

• Rolling color effects on the number “100”.

• Microtext featuring excerpts from Melba’s autobiography and Monash’s writings.

• Golden Wattle (Australia’s floral emblem).

• A Masked Owl, symbolizing watchfulness and intelligence.
  These elements enhance both aesthetic value and anti-counterfeiting protection.

5. Why was the note redesigned?

The redesign was part of the Next Generation Banknote (NGB) project to improve counterfeit resistance, durability, and accessibility. The RBA launched this initiative to ensure Australian banknotes remain among the most secure in the world.

6. What security features are included in the 2021 Australian $100 note?

The 2021 $100 note incorporates several advanced security technologies, including:

• Clear top-to-bottom window with moving holographic images.

• 3D fan design with color-changing effects.

• Microprinting of fine text only visible under magnification.

• See-through registration device forming a complete seven-pointed star when held up to the light.

• Fluorescent ink that glows under UV light.

• Intaglio (raised) printing for tactile recognition.
  These features make the note virtually impossible to counterfeit.

7. Is the 2021 Australian $100 note made of paper or plastic?

The note is printed on a polymer substrate, a type of durable plastic first pioneered by Australia in 1988. Polymer banknotes last four to five times longer than paper notes, resist tearing and moisture, and include advanced transparent security windows.

8. What do the tactile features on the note mean?

The 2021 note includes raised bumps on the long edge, designed to help people who are blind or vision-impaired identify denominations by touch. The $100 note features five raised dots, distinguishing it from other denominations.

9. How big is the 2021 Australian $100 note?

The dimensions remain consistent with previous versions: approximately 158mm long and 65mm wide. Maintaining uniform sizing ensures compatibility with ATMs, vending machines, and counting equipment.

10. What is the color of the 2021 Australian $100 note?

The note retains its traditional green color scheme, symbolizing growth, prosperity, and stability. The updated design, however, incorporates gradient hues and enhanced brightness for a modern visual appeal.

11. Are older $100 notes still legal tender?

Yes. All earlier $100 notes remain legal tender in Australia. The RBA has not withdrawn previous designs, meaning both old and new series can coexist in circulation.

12. How can I check if my $100 note is genuine?

You can confirm authenticity by checking the following:

• Tilt the note to see the flying bird and reversing “100” move within the clear window.

• Look for the clear window, not a glued-on patch.

• Feel for raised printing on the portraits and large numbers.

• Hold the note to light to reveal the seven-pointed star.

• Use a UV light to check for fluorescent security patterns.
  These tests quickly distinguish genuine notes from counterfeits.

13. How does the note honor Dame Nellie Melba?

The front side includes images of Melba performing and musical notes referencing her career. Microtext on the note also quotes lines from her autobiography, Melodies and Memories. Her inclusion pays tribute to her role in shaping Australia’s artistic identity.

14. How does the note celebrate Sir John Monash?

The reverse side depicts Sir John Monash alongside engineering drawings, the Shrine of Remembrance in Melbourne, and the Australian flag. These elements reflect his multifaceted legacy as an engineer, military commander, and nation builder.

15. What native flora and fauna appear on the note?

The Golden Wattle (Acacia pycnantha) appears as the background motif, while the Masked Owl (Tyto novaehollandiae) features in the transparent window. These symbols connect the note to Australia’s natural heritage.

16. What is the significance of the clear window?

The top-to-bottom transparent window showcases advanced security elements such as color-shifting patterns and holographic movement. It also integrates national symbols like the wattle and flying bird, merging aesthetics with anti-counterfeit protection.

17. Is the 2021 Australian $100 note rare or collectible?

Currently, the 2021 note is in wide circulation and not considered rare. However, collectors often seek low serial numbers, special prefixes, or uncirculated notes. Over time, pristine 2021 issues may increase in numismatic value.

18. How long does the polymer $100 note last in circulation?

On average, a polymer $100 note lasts 7 to 10 years, significantly longer than paper notes, which had a lifespan of only 2 to 3 years. This extended lifespan reduces replacement costs and environmental impact.

19. What is the counterfeiting rate for the $100 note?

According to the Reserve Bank of Australia’s 2021 Annual Report, the counterfeiting rate for $100 notes has decreased significantly due to the NGB series' advanced security features. The new design has made counterfeiting extremely rare.

20. How can I store the 2021 Australian $100 note safely?

Collectors should store banknotes in acid-free sleeves or archival-grade albums, away from sunlight, heat, and humidity. Avoid folding or pressing the note under heavy weight to preserve its mint condition.

21. What are some unique identifiers for collectors?

Collectors often track:

• Prefix letters (e.g., AA, BB, CA).

• Low serial numbers (like 000001).

• Consecutive serial pairs.

• Special commemorative or replacement issues.
  These factors can make certain notes more valuable over time.

22. What is the cultural importance of the $100 note?

The note symbolizes Australia’s excellence and resilience—showcasing figures who contributed to the nation’s cultural and technological growth. It bridges tradition and innovation through design, materials, and symbolism.

23. Can the note be damaged by water or heat?

Polymer notes are water-resistant and can survive accidental washing. However, exposure to high heat (over 120°C) can warp or damage them. Always store them flat and away from direct sunlight.

24. How does this note differ from the 1996 polymer version?

While both are made of polymer, the 2021 version has superior security features, tactile markings, clearer colors, and a more detailed portrait design. The earlier 1996 series lacked tactile dots and 3D effects.

25. Why is the $100 note important in Australia’s currency history?

The $100 note is the highest denomination in circulation, representing stability and trust in the Australian economy. It also marks the completion of the NGB series, making it a milestone in modern banknote design.

26. Are there special commemorative editions of the 2021 $100 note?

As of now, there are no official commemorative editions. However, the standard note itself serves as a commemoration of two influential Australians and the culmination of the Next Generation Banknote series.

27. Is the 2021 Australian $100 note still being printed?

Yes. The RBA continues to print and circulate 2021-series notes as demand requires. These notes will remain the standard design until a future redesign, likely decades away.

28. Can I exchange damaged $100 notes?

Yes. Damaged or partially torn notes can be redeemed at banks or directly through the RBA. The value is assessed based on how much of the note remains intact.

29. Where can I learn more about the $100 note’s features?

You can visit the official RBA website: banknotes.rba.gov.au , which offers interactive features, high-resolution images, and educational resources about Australia’s currency design and security.

30. What makes the 2021 Australian $100 note special?

The 2021 note blends Australia’s cultural heritage, technological innovation, and inclusive design principles. Its stunning artwork, unmatched security, and dedication to accessibility make it a global example of modern currency craftsmanship.

31. Are all 2021 $100 notes valuable?

No. Only uncirculated, rare prefix, error, or fancy serial notes carry premium value.

32. Can I still use the 2021 $100 note?

Yes. It remains legal tender and is widely accepted.

33. What’s the most valuable 2021 $100 note?

One with:

• First prefix EA21 or replacement prefix

• Fancy serial like 00000001 or 88888888

• Graded uncirculated by PMG or PCGS

• A verified printing error

📈 Future Investment Potential

High-grade or rare-prefix polymer notes are increasingly in demand, especially in Asia and Australia. Investing in 2021 $100 notes with:

• Low serials

• Replacement prefixes

• Certified condition

Conclusion

The 2021 Australian $100 note stands as a perfect blend of art, security, and national pride. As the final installment of the Next Generation Banknote series, it represents decades of innovation in banknote technology. With its powerful imagery of Dame Nellie Melba and Sir John Monash, vibrant green palette, tactile features, and unmatched anti-counterfeiting measures, the note not only serves as a medium of exchange but also as a tribute to Australian excellence. Whether you are a collector, historian, or simply curious, understanding the features, symbolism, and evolution of the 2021 $100 note provides a deeper appreciation of Australia’s cultural and financial heritage.

The 2021 $100 Australian banknote is more than just a high-value currency—it's a modern piece of Australian heritage, technology, and art. While common in daily use, many versions of the note carry hidden collectible value that could translate to hundreds or even thousands of dollars.

Whether you're an everyday user, a beginner collector, or a serious numismatist, always check your notes before spending them. You might just have a hidden gem in your wallet.

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