The value of £2 Darwin coins depends on condition and in what metal the coin was struck. Dual-metal coins were produced in the highest number and are worth approximately £7. The value of coins issued in silver and gold depends on current precious metal prices.
Silver Darwin coins were issued in .925 sterling silver as proof coins with only 5,000 made. The gold coins were issued as proofs in 22-carat gold with a mere 1,000 coins minted. The £2 Darwin coins were issued as commemorative coins by the Royal Mint in 2009 to commemorate the 200th anniversary of Charles Darwin's birth.