This is a fabulous hardback signed by 7 famous test pilots. The book has been signed by the author Wolfgang Spate who flew the Me163 rocket fighter. It has also been signed by Spitfire test pilot Alex Henshaw, Fleet Air Arm test pilot Eric 'Winkle' Brown, Slingsby aviation test pilot Norris Groves, Concorde Test Pilot Brian Trubshaw, Fleet Air Arm and Fairey Delta test pilot Peter Twiss and Jan Zurakowski (Battle of Britain & test pilot). This is a unique book as the signatures were collected by myself in the 1990's. the book is in mint condition.