The Britannia platinum investment coin is minted by The Royal Mint in 2 sizes, 1 Oz and 1/10 Oz, and the traditional motif is the female personification of Britain. The coins are minted from pure 999.5% platinum. The reverse depicts a warrior goddess in flowing robes and a Corinthian helmet on top of a cliff, embodying the unwavering pride of the nation. The rim of the coin features the inscription BRITANNIA, the year of issue and the fineness and weight of the metal. The obverse of the 1 oz (one troy ounce) Britannia coin shows the profile of Charles III. The portrait of the king, created by British sculptor Martin Jennigs, is complemented by a Tudor crown. The coin is engraved with the inscription CHARLES III • D • G • REX • F • D" and the face value.