I Have an unused Prisoner of war Air Mail Envelope/Letter .The front has lines for Prisoner of War No., Rank and Name, Camp Name and No, and Country. At the very top it says Prisoner of War Post, KRIEGSGEFANGENENPOST, Service des prisonniers de guerre and is stamped with George 6th stamp. On the inside it has it has 19 lines on which to write your letter, it states at the top WRITE VERY CLEARLY ON THE LINES TO AVOID DELAY IN CENSORSHIP NO ENCLOSURES ALLOWED. I would like to know if this would be of any value. Many thanks W Kynman