Rare British coins could be among the best alternative investments around, according to recently released figures.

The GB200 Coin Index, launched in May, has tracked 200 leading investment-grade British coins at auction over the past 10 years.

We have several superb British coins available for investment, including this Charles I Carlisle Besieged Shilling

It has found that the average coin on the index is up by 13.3% pa since 2002.

The most impressive performance was witnessed by a 1663 Charles II Gold Guinea first laureate bust, which grew in value from £3,250 in 2002 to £35,000 in 2012, a rise of 27.8% pa.

The index's most valuable coin is a Henry III gold penny with sceptre mark from the 13th century. It achieved £225,000 at auction in 2012, up 15.1% since 2002.

"What the index shows is that, like rare stamps, rare British coins continue on a steady upward trend with no volatility," said Keith Heddle, from the company behind the index.

The firm's GB250 index, which tracks 250 of the most collectible stamps, is up 13.4% in the past 10 years.

Paul Fraser Collectibles is here to help you capitalise on the strength of the rare coins sector. You can view the several investment-grade British and European coins we currently have for sale here.

Those looking for rare stamps will also be intrigued by what they find at Paul Fraser Collectibles.

The oldest coin on the index is a 150-50BC Gallo-Belgic, Gold Stater. Valued at £5,750, it has shown a price increase of 12.6% pa since 2002.

We will continue to bring you all the latest from the world of rare coins throughout the year so make sure you check back regularly.