This is a set of blocks celebrating the first flight of Concorde in 1969, featuring denominations of 4d, 9d, 1/6. The year of issue is between 1961-1970 and the quality is described as Mint Never Hinged/MNH. These stamps are of Pre-Decimal currency and have a grade of XF/S (Extremely Fine/Superb). The topic of the stamps is aircraft, and the cancellation type is unmounted mint. The certification is by the British Philatelic Association and the character family is comms. The stamps are multi-coloured and come in blocks of 3/4/3. catalogue value £1.65