2021 Gold Proof £100 Britannia And The Lion 1oz Coin
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AURUM BULLION PLC · COLLECTOR KNOWLEDGE
Gold Britannia Coins: Proof, Bullion & Collecting
Explore gold Britannia coins, compare Proof and bullion editions, and check year, weight, design and independent certification with Aurum Bullion Plc.
The modern gold Britannia series
The Royal Mint introduced modern gold Britannia coins in 1987, with Philip Nathan's interpretation of Britannia providing the series' enduring identity. Proof editions and changing artistic designs give collectors a different perspective from standard bullion issues.
Proof and bullion Britannias
A Proof Britannia is specially produced for collectors. A bullion Britannia is normally more closely associated with its precious-metal content. Both can be independently graded, but finish and numerical grade describe different characteristics.
Compare date, weight and design
Gold Britannias exist in different sizes and editions. Earlier bullion Britannias were made in 22-carat gold; The Royal Mint moved the bullion series to 24-carat gold in 2013. Check the official specification for the exact year and edition rather than applying a current bullion specification to every historical or Proof coin.
Visual security features also vary by year and edition. The four modern bullion security features should not be assumed to appear on every Proof Britannia.
Britannia coins in the Aurum collection
Explore the descriptions and photographs below. Current price, stock, condition and certification are confirmed by an Aurum specialist.
2010 Gold Proof Britannia £100 1oz
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Questions before buying a gold Britannia
Are all Britannias one ounce?
No. Different denominations and sizes exist. Check the weight and issue rather than relying on the series name.
Does Proof mean PF70?
No. Proof describes manufacture; PF70 is a grading designation for a certified specimen. See the grading and certification guide.
Is face value the price of the coin?
No. The legal denomination differs from the coin's metal value and collector-market price.
Building a Britannia collection
A collection can follow a year, design, denomination or set of certified grades. Compare like-for-like examples and consider cost, condition and presentation. Certification does not guarantee future value.
Series history and purity source: The Royal Mint: Gold Britannia. Read more in Aurum's British coin history.
Prepared by Aurum Bullion Plc · Updated 12 October 2026. Educational information; confirm the individual coin and its certification before purchase. Coin values can rise or fall.
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