This is a special produced glossy bookplate bearing the genuine signature of Battle of Britain Spitfire pilot David Denchfield. 
On 30th April 1940 Denchfield went to 15 EFTS Redhill. He moved to 15 FTS Brize Norton on 17th June, then to 15 AFTS Chipping Norton on 11th August for advanced flying training. From 23rd September he was at 7 OTU Hawarden to convert to Spitfires and then joined 610 Squadron at Acklington on 7th October 1940.
On a Blenheim escort to St. Omer on 5th February 1941 the squadron was attacked by Me109s and Denchfield's Spitfire N3249 was hit. Unable to regain control, he baled out at 5000 feet and after landing in a field he was captured by the Germans. 
Denchfield went first to Dulag Luft at Frankfurt
He was subsequently in Stalag Luft I at Earth, Stalag 8B at Lamsdorf, Stalag Luft 3 at Sagan, Stalag Luft 6 at Heydekrug, Stalag 355 at Thorn in Poland and finally Stalag 357 at Fallingbostel near Hanover.