1 oz Britannia Charles III Gold Coin 2025 - Royal Mint, .9999 fine gold
The 1 oz Britannia Charles III Gold Coin 2025 is an iconic British bullion coin struck by The Royal Mint - the world's oldest continuously operating mint with over 1,100 years of tradition. The coin contains exactly one troy ounce of pure .9999/1000 gold (31.1035 g), has a face value of 100 Pounds Sterling (£100) and is UK legal tender. Britannia is Europe's most popular gold bullion coin.
At GoldInvest24 we offer only authorised Royal Mint coins in protective capsules.
The Royal Mint - 1,100 years of minting continuity
The Royal Mint is Britain's oldest continuously operating institution and the world's oldest continuously active mint. First documented references date to around 886 - the reign of King Alfred the Great. Over 800 years in the Tower of London, from 1812 in Tower Hill, since 1968 in Llantrisant in Wales.
Britannia as a bullion coin has existed since 1987. In 2013 the Royal Mint upgraded fineness from 22K to 24K (.9999), matching highest global standards. All Royal Mint products are LBMA Good Delivery accredited.
Key features
- Issuer: The Royal Mint - LBMA Good Delivery
- Country of issue: United Kingdom
- Metal: Investment gold (Au)
- Fineness: .9999/1000 (24K, since 2013)
- Weight: 1 troy ounce (31.1035 g)
- Diameter: 32.69 mm
- Thickness: 2.79 mm
- Face value: 100 GBP
- Obverse: King Charles III (Martin Jennings, since 2023)
- Reverse: Britannia (Philip Nathan, since 1987)
- Security features: Latent image (since 2021), microprint
- Series: Britannia (since 1987, 24K since 2013)
- VAT: 0% (investment gold, EU Directive 98/80/EC)
- Packaging: Protective capsule at GoldInvest24
Market analysis - European liquidity leader
Britannia is the most traded gold bullion coin in Europe. Royal Mint sells 300,000-500,000 Britannia 1 oz bullion pieces annually. For UK investors there's an additional advantage - Britannia and Sovereigns minted after 1837 are exempt from UK Capital Gains Tax (CGT) as legal tender.
Britannia 2021+ introduced latent image technology - the image "switches" between motif and year depending on light angle. Royal Mint is one of the first mints to implement such security in bullion coins.
Britannia is denominated in GBP - a currency historically less volatile against gold than USD or EUR. Multi-currency portfolios combine Britannia (GBP), Krugerrand (ZAR), Maple Leaf (CAD) and Vienna Philharmonic (EUR).
Obverse - King Charles III (Martin Jennings)
The obverse shows the official portrait of King Charles III by Martin Jennings, British sculptor. Selected by the Royal Mint Advisory Committee and personally approved by the King. On bullion coins since 2023. Inscriptions: CHARLES III · D · G · REX · F · D · 100 POUNDS.
Reverse - Britannia (Philip Nathan)
The reverse depicts Britannia in Philip Nathan's 1987 design - Britannia standing with Corinthian helmet, trident in right hand and Union Jack shield in left. Latent image to the left of Britannia reveals the year of issue at the right light angle. Inscriptions: BRITANNIA · 1 OZ FINE GOLD 999.9 · 2025.
Technical specifications
| Parameter |
Value |
| Manufacturer |
The Royal Mint, Llantrisant (Wales) |
| Accreditation |
LBMA Good Delivery |
| Series |
Britannia (since 1987, 24K since 2013) |
| Metal |
Gold |
| Fineness |
.9999/1000 |
| Weight |
1 oz (31.1035 g) |
| Diameter |
32.69 mm |
| Thickness |
2.79 mm |
| Face value |
100 GBP |
| Year of issue |
2025 |
| Obverse |
Martin Jennings, Charles III, since 2023 |
| Reverse |
Philip Nathan, Britannia, since 1987 |
| Security features |
Latent image, microprint |
| Packaging |
Protective capsule |
| VAT |
0% |
| Catalog number |
109375 |
FAQ
What is the "latent image" on Britannia?
Hidden anti-counterfeit security since 2021. Microlenses switch the image between motif and year depending on light angle.
Is Britannia subject to VAT?
No. Investment gold .9999 and 1 oz is VAT-exempt under EU Directive 98/80/EC.
How does Britannia 24K differ from older 22K?
From 2013 switch from 22K to 24K. Gold content 1 oz unchanged, but total mass reduced from 33.93 g to 31.1035 g.
Is Britannia CGT-exempt in UK?
Yes for UK citizens - Britannia after 1837 is exempt from UK Capital Gains Tax as legal tender.
How can I tell if a Britannia is authentic?
Latent image, precise Nathan relief, 32.69 mm diameter, 31.1035 g ±0.1 g, microprint around Britannia figure.
