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The iconic Britannia has represented Britain, and the country’s evolution, since Roman times. She is a symbol of the nation at a point in time. In 2021, Britannia leads the way once more, redefining security in the bullion market with four groundbreaking features. This new vision of Philip Nathan’s Britannia, created in 1987, was created by the team behind ‘the world’s most secure coin’, the United Kingdom £1 coin. Surface animation provides a background for Britannia, reflecting the flow of waves as the coin is moved. Between this and the banding of the coin, you will find micro-text with the wording – DECUS ET TUTAMEN, or AN ORNAMENT AND A SAFEGUARD, describing the features that both decorate and protect the coin. A latent feature in the lower hand segment of the coin switches between a trident and a padlock based on the viewer’s perspective – emphasizing her maritime strength and the coin’s secure nature. Finally, details like the Union Flag on Britannia’s shield have been especially highlighted with tincture lines. These landmark design elements combine to create not only a stunning Britannia, struck in half an ounce of 999.9 fine gold, but also the most visually secure coin in the world.

These features are also available on the 1oz, 1/4oz and 1/10oz fine gold editions of the coin, and on the 1oz fine silver edition.

Key Features:

  • Four advanced features take visual security to the next level
  • A latent image changes from a padlock to Britannia’s famous trident
  • Surface animation brings the background of sparkling waves to life
  • Micro text gives both decoration and protection – ‘an ornament and a safeguard’
  • Britannia’s shield bears the Union Flag accented with tincture lines


Specification Value
Denomination £50
Alloy 999.9 Fine Gold
Diameter 27.00mm
Reverse Designer Philip Nathan
Obverse Designer Jody Clark
Specification Value
Quality Bullion
Year 2021
Pure Metal Type Gold
Pure Metal Content 0.5 Troy Oz
Fineness 999.9
Packaging Single Coin Capsule
Security Features Latent feature trident and padlock | surface animation waves detail

Key Security Features

Latent feature

A latent feature switches between a trident and a padlock as the viewer changes their perspective, representing both Britannia and bullion security.


Tincture lines

Britannia's union flag shield, a powerful symbol of Britain as a whole, is highlighted by the tincture lines.


Micro-text next to the coin's banding reads 'DECUS ET TUTAMEN', which translates as 'AN ORNAMENT AND A SAFEGUARD'.


Surface animation

The background has surface animation reflecting the movement of the sea, which adds to the intricacy and safety of the coin.

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