Elizabeth II (1952 -2022), gold proof Two-Pounds, 2003, 50th Anniversary of the discovery of the structure of DNA, struck in 22ct yellow and red gold, crowned head right, IRB below for designer Ian Rank-Broadley, Latin legend surrounding in red gold, ELIZABETH II. DEI. GRA. REG. FID. DEF. 2009., rev. design by John Mills depicting the spiraling double helix structure of DNA with the inscription ‘DNA DOUBLE HELIX' and the dates '1953' and '2003' separated by 'TWO POUNDS', with edge inscription 'DEOXYRIBONUCLEIC ACID', 15.97g (S.K16). Brilliant proof as struck, accompanied by original Royal Mint box and certificate of authenticity.

Limited issue of 1,500.

The Latin legend translates as “Elizabeth the Second by the Grace of God, Queen, Defender of the Faith.”

Estimate: £ 550 - 650