British Silver Britannia Guide
The Silver Britannia is the United Kingdom's one-ounce silver bullion coin, produced by The Royal Mint since 1997. Current coins are .999 fine silver, a standard adopted in 2013; earlier coins used the traditional .958 "Britannia silver" standard. Modern .999 Britannias meet the IRS fineness standard for precious metals IRAs, while older .958 coins do not.
From Britannia Silver to Fine Silver
When the Royal Mint introduced the Silver Britannia in 1997, it used .958 fineness. That figure has deep roots: "Britannia silver" was a legal standard for English silverware dating back to 1697, set higher than sterling silver (.925). Using it tied the new coin to centuries of British silver tradition.
In 2013, the Royal Mint raised the coin's purity to .999, bringing it in line with the American Silver Eagle and other major silver bullion coins. The same year, the gold version moved to .9999, as covered in our Gold Britannia guide.
| Years | Fineness | Notes |
|---|---|---|
| 1997–2012 | .958 | Traditional Britannia silver standard |
| 2013 onward | .999 | Modern fine silver bullion standard |
Design
The coin features Britannia, the figure personifying Britain, standing with trident and shield. In its early years the Silver Britannia used several different designs, with alternate images appearing in some years. The standing Britannia by Philip Nathan has been the regular bullion design for most recent issues. The obverse shows the reigning monarch: Queen Elizabeth II on coins through 2022 and King Charles III on later issues. The coin carries a face value of two pounds sterling and is legal tender in the United Kingdom.
Security Features Since 2021
The Royal Mint added several anti-counterfeiting features to the Britannia bullion range in 2021, according to the Mint:
- A latent image that switches between a padlock and a trident when the coin is tilted.
- Surface animation in the background waves that shifts under light.
- Micro-text around the design and tincture lines on the Union flag of Britannia's shield.
These features make the newer coins easier to authenticate visually. Older coins lack them, so checking weight and dimensions is more important for earlier dates. Our guide on how to spot fake gold and silver walks through basic tests.
Milk Spots on Earlier Coins
Some Silver Britannias from the 2010s are known for developing white "milk spots," a cosmetic issue that affects several silver bullion coins. The spots do not change the silver content. They mainly matter to buyers who care about appearance or who may sell to someone who does.
Holding Silver Britannias in a Retirement Account
Section 408(m) of the Internal Revenue Code lets an IRA hold silver bullion that meets the fineness standard of a regulated futures market, which for silver is .999. Silver Britannias from 2013 onward meet that standard. Coins from 1997 to 2012, at .958, fall short, and unlike American Silver Eagles they have no statutory exception, so custodians generally will not accept them.
When buying for an IRA, make sure the invoice shows the year and .999 fineness. As with all IRA metals, the coins must be held by a trustee or custodian, usually at an independent depository. Our list of IRA-eligible silver coins and our explainer on IRS purity standards provide more detail.
Goldco, a precious metals company, lists a Britannia among the coins it offers. Our page on silver coins available through Goldco covers its silver range. Because Goldco's catalog marks at least one silver coin as not IRA eligible, confirm eligibility for each specific product before buying.
UK and U.S. Tax Differences
The Royal Mint notes that Britannias, as UK legal tender, are generally exempt from Capital Gains Tax for UK residents. That is a UK rule. For U.S. taxpayers, the IRS treats silver coins as collectibles, and long-term gains can be taxed at a maximum rate of 28%. Our guide to taxes on selling physical gold and silver explains the U.S. rules; a licensed tax professional can address your own circumstances.
How the Silver Britannia Compares
Next to the American Silver Eagle and the Canadian Silver Maple Leaf, the Britannia offers the same one troy ounce of silver with its own design and security features. Pricing differs by dealer and market conditions; Britannias have often been priced below Silver Eagles, but compare live quotes rather than assuming. Our explainer on premiums and spreads shows how to compare offers on a per-ounce basis.
Frequently Asked Questions
What does .958 silver mean on older Britannias?
It means 95.8% silver, the historic Britannia standard. Since 2013 the coin has been .999 fine.
Can a 2010 Silver Britannia go in an IRA?
Generally no. Its .958 fineness is below the .999 silver standard, and it has no statutory exception.
Does the Silver Britannia contain a full ounce of silver?
Yes. Both older and newer one-ounce coins contain one troy ounce of fine silver; older coins weigh slightly more overall because of their alloy.
What is the coin's face value?
Two pounds sterling, far below the value of its silver.