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Last Updated on 10/01/2026

UK Britannia Platinum
Bullion Coin

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The 999.5 fine platinum Britannia bullion coins are minted in a proof-like finish and carry the United Kingdom government’s assurance of weight and purity.

The platinum bullion coin is a valuable addition to the market alongside other platinum bullion coins like the Canadian Platinum Maple Leaf, Australian Platinum Kangaroo, and American Eagle Platinum bullion coin.

One little-known fact that some UK residents are unaware of is that bullion coins from The Royal Mint are Tax-exempt from Capital Gains due to the coins' status as legal British currency, giving UK residents who purchase these coins added profit when they decide to sell.

Design of the
1 oz. Britannia Platinum Bullion Coin

Obverse

The direction of the monarch's face is a subtle difference between the 2022 and the current Platinum Britannia bullion coins.

The late Queen Elizabeth II faced to the right, and the new King of England, Charles III, is facing the left; it is a tradition that dates back to the 17th century.

Martin Jennings designed the effigy of the King Charles III; his initials "MJ" are inscribed directly below the King's neck. (click image to enlarge)

Mr. Jennings stated the following about his design at the Royal Mint's Official Unveiling of the King's effigy, "The portrait was sculpted from a photograph of The King, and was inspired by the iconic effigies that have graced Britain’s coins over the centuries."

Inscriptions, inside the notched crenelated border of the coin, are the words and letters:

• CHARLES III
• · D ∙ G ∙ REX  (stands for "Dei Gratia Rex," a Latin title meaning "By the Grace of God, King")
• · F ∙ D  (stands for "Fidei Defensor," a Latin title that translates into "Defender of the Faith") The Latin phrases have been used on British coinage since the 16th century.
• · 100 POUNDS ·
  

The Government of the United Kingdom has guaranteed the Platinum Britannia bullion coin as legal tender and is Tax-exempt from Capital Gains for "U.K. residents" due to the coins' status. 

Coin Photo provided courtesy of The Royal Mint

Reverse

Britannia's Image is a Symbol of National Honor for the United Kingdom.

"Britannia" is viewed as a beautiful young woman standing in the wind looking to her right, watching the seas, with flowing hair and a Corinthian helmet on her head, dressed in wind-whipped robes. 

Britannia holds a three-pronged trident in her right hand and, in her left hand, an olive branch and a shield that has the United Kingdom's Union Jack Flag on it.

Designer Philip Nathan created Britannia's design.

Inscriptions: 

• ❚ BRITANNIA ❚
  
• Year of Issue ❚
  
• 1 oz
• ❚ 999.5 ❚ PLATINUM ❚
  
• NATHAN - designer's last name
• notched crenelated border

Security Features

DECUS ET TUTAMEN
"An ornament and a safeguard"

• Micro-Text on an inner perimeter banding stating "DECUS ET TUTAMEN," translated to "An ornament and a safeguard"
• small circle with a latent image; the image is visible when the coin's angle is changed; it switches between a trident emphasizing Britannia's naval strength and a padlock
• beaded laser-engraved surface that gives the impression of waves flowing in the background
• smooth lines on Britannia's shield provides contrast to the tones of light in the United Kingdom Union Jack flag  

Coin Photo provided courtesy of The Royal Mint

Edge

Just like the Silver and Gold Britannia Bullion coins, the Royal Mint produces the Britannia Platinum bullion coin with a reeded edge.

The History of "Britannia"

"Britannia" is the ancient Latin name for Great Britain, originating from its time as a province of the Roman Empire.

Philip Nathan's "Britannia"
30 troy oz Sterling Silver Statue

During the 2nd century, Roman Britannia came to be personified as a woman, armed with a spear and shield and wearing a Corinthian helmet.

After the decline of the Roman Empire, Britannia's image wasn't used again until the 16th century during the reign of Elizabeth I, when John Dee promoted her image in a book he published in 1577.

John Dee illustrated Britannia kneeling on the shore before Elizabeth I, seated on a ship, in an appeal to the queen to strengthen the navy.

The Romans were the first to use Britannia on coinage, Britain began using her image on pattern farthings made in 1665 alongside the Latin inscription "I Claim the Four Seas."

After the Acts of Union in 1707, which joined the Kingdoms of England and Scotland, the personification of the martial Britannia was used as an emblem of British maritime power and unity, most notably in the patriotic song "Rule, Britannia!".

Today, Britannia is portrayed standing or seated alone, or with a lion holding a spear or a three-pronged trident in one hand and in the other hand holding a shield with the British Union Jack Flag on it.

1 oz. Britannia Platinum
Coin Information

Introduction:...............2018

IRA Approved:.............Yes

Grade:.........................Uncirculated

Denomination:............100 POUNDS (£100 GBP)

Platinum Content:.......1 Troy oz.

Total Weight:..............31.10 grams

Purity:.........................99.95% / 999.5 per mille

Diameter:....................32.69mm

Designers Obverse:.....Jody Clark (2018 - 2022)

Designers Obverse:.....Martin Jennings (2023 - Present)

Designers Reverse:.....Philip Nathan (2018 to Present)

Edge:..........................Reeded

Mintage:.....................Unlimited Mintage (Mintage Figures have not been released)

Coin Photo provided courtesy of The Royal Mint

1/10 oz. Britannia Platinum
Bullion Coin Information

Introduction:...............2018

IRA Apporved:.............Yes

Grade:.........................Uncirculated

Denomination:.............£10 GBP (10 pounds)

Platinum Content:........1/10 Troy oz.

Total Weight:...............3.11 grams

Purity:.........................99.95% / 999.5 per mille

Diameter:....................16.50 mm

Thickness:...................1.8 mm

Designers Obverse:......Jody Clark (2018 - 2022)

Designers Obverse:......Martin Jennings (2023 - Present)

Designers Reverse:......Philip Nathan (2018 to Present)

Edge:...........................Reeded

Mintage:......................Unlimited Mintage  (Mintage Figures have not been released)

Coin Photo provided courtesy of The Royal Mint

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United Kingdom
Britannia Bullion Coins

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Silver Britannia

Gold Britannia

Platinum Britannia

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