UK 2018 £2 RAF Centenary F-35 Lightning II Uncirculated CoinThe Royal Air Force (RAF) was formed in April 1918. As the RAF marks its centenary in 2018, five official UK 2 coins have been released to commemorate 100 years. Celebrate todays RAF with pride and inspire generations to come. This cupro nickel with outer nickel brass coin features the Spitfire, the only RAF fighter which saw service throughout the Second World War.