1 oz Britannia Charles III 2025 — British bullion gold coin from The Royal Mint with 4-tier security system, CGT-free in UK
Britannia 1 oz with 2025 vintage is the flagship bullion coin of The Royal Mint with 999.9/1000 fineness and 31.103 g net gold. Diameter 32.69 mm, thickness 2.79 mm, face value 100 GBP — full legal tender status in Great Britain.
The 2025 vintage is the third production year with the Charles III portrait by Martin Jennings (approved 2022), the reverse depicts Britannia with trident by P.J. Lynch (2018). The coin price is linked to current LBMA precious metals prices.
Technical specifications 1 oz Britannia Charles III 2025
| Parameter |
Value |
| Gold weight (Au) |
31.103 g (1.000 troy oz) |
| Fineness |
999.9/1000 (.9999, 24 karat) |
| Diameter |
32.69 mm |
| Thickness |
2.79 mm |
| Face value |
100 GBP (legal tender UK) |
| Manufacturer |
The Royal Mint (Llantrisant, Wales, since 1968) |
| Obverse |
Charles III — Martin Jennings (2022) |
| Reverse |
Britannia with trident — P.J. Lynch (2018) |
| Security features |
4-tier optical system (since 2021): trident↔padlock, animated lines, micro-text, radial lines |
| Accreditation |
LBMA Good Delivery (Royal Mint since 1750) |
| UK tax status |
CGT-free for UK residents |
| Packaging |
Individual capsule |
| VAT |
Exempt (EU Directive 98/80/EC) |
Why 1 oz Britannia Charles III 2025?
- 31.103 g of 999.9/1000 fineness gold — British 24-karat standard since 2013 (previously 22 karat)
- The Royal Mint — oldest operating mint in Great Britain (Llantrisant, Wales), LBMA accreditation since 1750
- 4-tier optical security system (since 2021) — trident↔padlock, animated lines, micro-text, radial lines
- Obverse Charles III by Martin Jennings (2025 vintage is third year with the new monarch portrait)
- Reverse with Britannia and trident motif — P.J. Lynch (2018), symbol of Great Britain since the 18th century
History of the Britannia series — from 1987 to 2025 vintage
The Royal Mint is the oldest operating institution in Great Britain — its roots reach back to 886 AD (reign of Alfred the Great). The current location in Llantrisant in Wales has been in operation since 1968, after relocating production from the Tower of London. The mint is a 100% Crown-owned company — the only structure in the world where the national mint is owned by the monarch through the Treasury Solicitor.
The Gold Britannia 1 oz was introduced in 1987 — originally as a coin with 916.7/1000 fineness (Crown Gold 22 karat, British standard since Henry VIII in 1526). The issue decision was the Royal Mint's response to the successes of competing bullion coins in the 1 oz segment: Krugerrand (since 1967), Maple Leaf (since 1979), American Eagle (since 1986). Britannia was to be the British counterpart in this segment.
In 2013, the Royal Mint raised the Britannia fineness to 999.9/1000 (.9999, 24 karat) — synchronizing the standard with Maple Leaf (.9999 since 1982) and Vienna Philharmonic (.9999 since 1989). The decision increased Britannia's competitiveness in the 1 oz .9999 segment and significantly expanded the recipient market (purely bullion-oriented customers prefer pure fineness).
The year 2021 brought a historic innovation — the introduction of a 4-tier optical security system. The Royal Mint designed mechanisms that no other bullion coin possesses in full scope. Each of the four tiers acts independently, but all together create a dynamic visual effect impossible to reproduce by photochemical methods: hidden image change (trident visible from one angle changes into a padlock from another), animated color lines on Britannia's shield, micro-text "BRITANNIA" along the coin edge, radial lines creating a "shimmer" effect.
The 2025 vintage is the third production year with the Charles III portrait by Martin Jennings, approved in 2022 after the monarch's accession (the previous portrait of Queen Elizabeth II in the Jody Clark version was valid from 2015 to 2022). Britannia 2025 is thus the current standard of the British Mint: .9999, 4-tier security, Charles III, CGT-free.
Obverse — Charles III portrait by Martin Jennings
On the obverse of the Britannia 2025 coin is the portrait of King Charles III in left profile, by British sculptor Martin Jennings. Jennings is one of Great Britain's leading monumental designers (known among others for the Paddington Bear statue at Paddington station and the Mary Seacole statue in front of St Thomas' Hospital in London). The portrait was officially approved by Charles III in September 2022.
Around the portrait are the inscriptions "CHARLES III · D · G · REX · F · D" ("Charles III, by the Grace of God, King, Defender of the Faith"), the face value "100 POUNDS" and the year of strike ("2025"). The portrait stands out for its detail — from hairlines to the texture of the ceremonial uniform. Martin Jennings created the first official likeness of Charles III in British numismatics, replacing the Jody Clark version of Queen Elizabeth II (2015-2022) and the earlier Ian Rank-Broadley version (1998-2015).
Reverse — Britannia with trident by P.J. Lynch
The reverse of the coin depicts the classic Britannia motif — the personification of Great Britain as a woman in a Corinthian helmet, holding a trident and a shield with the Union Jack flag. The design valid since 2018 was created by P.J. Lynch — Irish illustrator known for children's books (among others "A Christmas Carol" and "The Snow Queen"). Lynch designed Britannia as a classic figure standing on a cliff, with Atlantic waves in the background.
The Britannia motif in British numismatics dates back to 1672 (reign of Charles II), but its modern iconography was established in 1817 — with Benedetto Pistrucci's Sovereign design. Britannia symbolizes British maritime dominance and national values (justice, wisdom, strength). Since 2021, around the figure is struck the 4-tier optical security system — the most advanced in bullion numismatics. Independent measurements confirm that the dynamic animations on Britannia's shield are impossible to reproduce by standard counterfeiting techniques.
Around Britannia is the inscription "BRITANNIA · 1 OZ · 999.9 FINE GOLD". The coin edge additionally contains the laser-engraved micro-text "BRITANNIA · BRITANNIA · BRITANNIA" visible under 10× loupe — the fourth element of the security system.
What to look for when buying 1 oz Britannia Charles III 2025?
First: The CGT-free status applies only to tax residents of Great Britain. Britannia and Sovereign are exempt from Capital Gains Tax in UK as legal tender coins with GBP face value (Coinage Act 1971). The status does not apply to residents of Poland, Germany, USA and other jurisdictions — there local regulations on the taxation of bullion gains apply.
Second: Verify the 4-tier optical security system. Under different light angles on the Britannia shield you should see a dynamic animation (trident changing into padlock). Under 10× loupe along the edge the micro-text "BRITANNIA" is visible. Radial lines on both sides create a "shimmer" effect under angle. Absence or incorrect execution of any of the four elements indicates a counterfeit.
Third: The 2025 vintage is the third year with the Charles III portrait — without additional collector premium relative to newer vintages. The 2023 vintage (first with Charles III) and 2024 (second) may carry a small numismatic markup at collector dealers. Charles III Britannia vintages will form an unbroken series for the coming decades — analogously to the Elizabeth II series (1987-2022).
Fourth: Diameter 32.69 mm and thickness 2.79 mm make Britannia a coin of standard 1 oz size (between Maple Leaf 30 mm and Vienna Philharmonic 37 mm). 999.9 fineness means the metal is soft — storage in individual capsule is recommended to reduce the risk of micro-damage.
Why GoldInvest24?
- Manufacturers with LBMA Good Delivery accreditation — Royal Mint (since 1750), Royal Canadian Mint, Münze Österreich, Rand Refinery, PAMP Suisse
- Full range of formats — from 1 g to 1 kg in bars and coins from 1/20 oz to 1 oz in multiple series
- Product descriptions in three language versions (PL/DE/EN) with concrete technical specifications and historical data
- Access to current precious metals prices on LBMA updated in real time
- Portfolio supplementation with categories gold investment coins, gold bullion bars, silver investment coins and silver bullion bars
Comparison of 5 coins and bars from the 1 oz package
| Feature |
Britannia |
Maple Leaf |
Philharmonic |
Krugerrand |
PAMP Fortuna |
| Manufacturer |
Royal Mint |
Royal Canadian Mint |
Münze Österreich |
Rand Refinery |
PAMP Suisse |
| Fineness |
999.9 |
999.9 |
999.9 |
916.7 (22 kt) |
999.9 |
| Diameter |
32.69 mm |
30.0 mm |
37.0 mm |
32.77 mm |
24×41 mm |
| UK status |
CGT-free for UK residents |
none |
none |
none |
none |
| Security |
4 optical tiers |
Bullion DNA + app |
Micro-"W" since 2024 |
none (Crown Gold) |
CertiPAMP + Veriscan |
Frequently asked questions (FAQ)
What characterizes 1 oz Britannia Charles III 2025?
It is a British bullion coin from The Royal Mint with 999.9/1000 fineness and 31.103 g net gold, diameter 32.69 mm and face value 100 GBP. The 2025 vintage is the third production year with the Charles III portrait by Martin Jennings. Obverse Charles III (Jennings 2022), reverse Britannia with trident (Lynch 2018), 4-tier optical security system since 2021.
What are the fineness and weight of the Britannia 1 oz coin?
The fineness is 999.9/1000 (.9999, 24 karat), net gold weight 31.103 g (1.000 troy oz). Diameter 32.69 mm, thickness 2.79 mm. Britannia 1 oz originally had 916.7 fineness (22 karat), the fineness was raised to 999.9 in 2013.
Who designed the obverse and reverse of Britannia?
The Charles III portrait on the obverse was designed by Martin Jennings — British sculptor known for the Paddington Bear and Mary Seacole monuments. Design approved by the monarch in 2022. The reverse (Britannia with trident) was created by Irish illustrator P.J. Lynch in 2018 — the Britannia motif in British numismatics dates back to 1672.
Britannia 1 oz vs Maple Leaf 1 oz — which to choose?
Both coins have 999.9 fineness and 31.103 g weight. Britannia has a 4-tier optical security system (since 2021) and CGT-free status in UK (if the buyer is a UK tax resident). Maple Leaf has the Bullion DNA system with verification app. Britannia diameter 32.69 mm vs Maple Leaf 30.0 mm.
Who is Britannia 1 oz a good choice for?
Britannia 1 oz is a classic position of the British bullion portfolio — particularly attractive for UK residents due to the CGT-free status (Capital Gains Tax exemption for GBP legal tender coins). Also for collectors who value the most advanced optical security system among bullion classics.
Is Britannia VAT-exempt in the EU?
YES — the 999.9/1000 fineness significantly exceeds the minimum 995/1000 required for VAT exemption on investment gold (EU Directive 98/80/EC). Additionally, Britannia is exempt from Capital Gains Tax for UK residents.
How to buy Britannia 1 oz at GoldInvest24?
Britannia 1 oz 2025 is in the gold investment coins category of GoldInvest24, the price is linked to the current LBMA precious metals prices. Each coin is verified visually for the 4-tier security system before shipping in an individual capsule.
The price of 1 oz Britannia Charles III 2025 is updated in real time and linked to LBMA precious metals prices.
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