Elizabeth II, £2 (DNA) 2003 Silver Proof

In 2003 the Royal Mint issued a special commemorative £2 piece to honour the finding of the double helix the basis of DNA which is of course, the building block of all life. The coins on offer are the VIP edition available in both Proof Sterling Silver and Proof Sterling Silver Piedfort. Because the normal coins are bi-metallic, the Mint has gold plated the outer edge to make them look like two different metals. But both are solid Sterling Silver. Supplies are of course limited.