Experience the Glorious History of the RAF with our selection of stunning commemoratives celebrating 100 years of the Royal Air Force. Continue your Glorious History collection with the ˜Bristol Blenheim Glorious History commemorative. Originally developed as a civil airliner, the Air Ministry was so impressed by the performance Type 142 they ordered a modified design to be introduced in March 1937 The gold plated commemorative shows the engraving of the historic aircraft, the obverse features the official RAF logo in full colour above a fleet of engraved RAF aircraft.