2025 Extragalactic 5oz Silver Patinaed Coloured Coin with Argyle Diamonds Perth Mint Presentation Case & COA
EXTRAGALACTIC
2025 5oz Silver Patinaed
Coloured Coin
The Perth Mint is proud to present this unique coin celebrating the awe-inspiring nature of the Universe, hand set with Argyle pink, golden, and two white diamonds.
Key features:
- 99.99% pure silver
- Argyle diamonds: pink & gold
- White diamonds
- Maximum mintage – 1,000
- Australian legal tender
- Numbered certificate of authenticity
- Presentation packaging
Product Information:
- Item Code 25Q79AAA
- Barcode 9327025054339
- Maximum Mintage 1,000
- Release Date 2 September 2025
Extragalactic astronomy is the study of objects and phenomena beyond the Milky Way. Among the most observed deep-space objects is the Whirlpool Galaxy (aka Messier 51). Located 31 million light-years away in the constellation Canes Venatici, it offers a face-on view enabling astronomers to study its magnificent spiral structure comprising huge numbers of stars.
Within its centre and along its swirling arms, dense clouds of gas and dust are being compressed to create clusters of new stars. Not only is the Whirlpool Galaxy a captivating sight, but it also offers researchers an unprecedented opportunity to investigate star-forming processes.
Design
This uniquely patinaed coin portrays a coloured representation of the Whirlpool Galaxy, encircled by the inscriptions ‘EXTRAGALACTIC’, ‘23.58 KPC | 31 MLY’ (its diameter in kiloparsecs and distance from Earth in megalight-years), and its location on the celestial sphere at coordinates ‘RA 13h 29m 53s | Dec +47° 11’ 43’. Representing stars within the Galaxy’s arms, the reverse is hand set with a pink, golden, and two white diamonds. Also included are the designer’s initials ‘NM’, The Perth Mint’s ‘P’ mintmark, and the 2025 year-date.
Presentation
This beautiful coin is in a specially designed circular presentation box, with an attractive shipper and includes a certificate of authentication.
These coins have been individually treated to give them a pleasing patina; a surface look normally associated with objects that have grown more beautiful over time. As a result of this treatment, the appearance of each coin in the mintage may vary.
Technical Specifications
| Year Date | 2025 |
| Silver Content (Troy oz) | 5 |
| Argyle pink diamond (approx. carat) | 0.03 |
| Argyle golden diamond (approx. carat) | 0.10 |
| White diamonds (total approx. carat) | 0.20 |
| Monetary Denomination (AUD) | 25 |
| Fineness (% purity) | 99.99 |
| Minimum Gross Weight (g) | 155.533 |
| Maximum Diameter (mm) | 55.90 |
| Maximum Thickness (mm) | 8.50 |
| Maximum Mintage | 1,000 |
| Finish | Patinaed |
| Legal Tender | Australia |
| Reverse Designer | Natasha Muhl |
| Effigy Designer | Dan Thorne |
| SKU | 25Q79AAA |
| Barcode # | 9327025054339 |
| Brand | Perth Mint |
| Shipping Weight | 0.400 kg |
| Unit Of Measure | each |
| Era | 2020s |
| Composition | Silver , Diamonds |
| Weight | 5oz |
| Origin | Australia |
| Features | Mint Marked , Certified , Coloured , Legal Tender |
