Struck by The Perth Mint from 5oz of 99.99% fine silver, the Australia 2025 Extragalactic 99.99% Patinaed Coloured Silver Coin with Diamond 5oz captures the awe-inspiring beauty of the Whirlpool Galaxy (Messier 51), located 31 million light-years away. Known for its striking spiral arms and star-forming regions, this deep-space marvel is brought to life in vivid colour and enhanced with a unique patina finish, giving each coin its own distinct character.

The reverse features a coloured depiction of the Whirlpool Galaxy surrounded by inscriptions ‘EXTRAGALACTIC’, ‘23.58 KPC | 31 MLY’, and its celestial coordinates ‘RA 13h 29m 53s | Dec +47° 11’ 43’. Set within the swirling arms are four hand-set diamonds: one Argyle pink diamond (approx. 0.03ct), one Argyle golden diamond (approx. 0.10ct), and two white diamonds with a combined total weight of approx. 0.20ct. Also included are the designer’s initials ‘NM’, year of issue and The Perth Mint’s “P” mintmark. The obverse depicts Dan Thorne’s effigy of His Majesty King Charles III, the King’s name “CHARLES III”, the coin’s weight, purity, metal content, face value and country of issue.

Each coin is housed in an elegant black display case within a themed shipper and accompanied by a numbered Certificate of Authenticity. Each coin is individually patinaed, creating a distinctive antique finish that enhances its cosmic beauty, ensuring no two coins are exactly alike. With its combination of advanced minting artistry, natural diamonds from Australia, and a patina finish, this release is a spectacular tribute to the wonders of the universe.

Patinaed refers to a surface finish that gives an object the appearance of having aged gracefully over time. It creates a soft, weathered, or antique look, often highlighting textures and colours, making each piece unique. In coins, patina treatment is intentional and decorative, not due to wear.

Product Highlights:

．Contains 5oz of 99.99% fine silver

．Worldwide limited mintage of 1,000 silver coins

．Stunning patinaed finish with vivid colour portraying the Whirlpool Galaxy (Messier 51)

．Features Argyle pink diamond (approx. 0.03ct), Argyle golden diamond (approx. 0.10ct), and two white diamonds (total approx. 0.20ct) set by hand

．Each coin with unique patina variations

．Each coin is presented in an elegant black display case within a themed shipper, plus a certificate of authenticity