Old but not old enough to have been part of the 62 Sqn era. However, there is some good tales of very early test and display flying by Roland Beaumont in his book "Phoenix into Ashes" not that easy to get hold of but a great tale of the British Aircraft industry actually being a world beater (so sad we lost it) and selling the aircraft under license to the spams after competing in a fly off against U.S competitiuon...My how things have changed.