This is a specially produced bookplate featuring an original pencil drawing portrait by Steve Teasdale  with white highlights on sepia recycled card. 
Underneath the drawing is the genuine signature of Arthur Harris. The bookplate is approximately 20 cm x 13 cm and would fit most books on Bomber Command/ Dambusters etc.
Marshal of the Royal Air Force Sir Arthur Travers Harris, 1st Baronet, GCB, OBE, AFC (13 April 1892 – 5 April 1984), commonly known as "Bomber" Harris by the press and often within the RAF as "Butch" Harris, was Air Officer Commanding-in-Chief (AOC-in-C) RAF Bomber Command during the height of the Anglo-American strategic bombing campaign against Nazi Germany in the Second World War.