A very rare original (unfinished) hand drawn illustration of the RAF Reid And Sigrist R.S.1, a twin-engined, three-seat advanced trainer developed in WW2, by J.H. Clark, famed chief illustrator at 'The Aeroplane' magazine, responsible for many of their superb exploded diagrams and detailed technical illustrations. Drawn by Clark in black ink on thick tracing paper. It measures approximately 25.5 x 35cm and is in very good overall condition. It would look superb mounted and framed. Stock code P27174.