VERY RARE ONLY 13 OF THIS COVER EVER SIGNED - HANS ROSSBACH SIGNED LIMITED EDITION POSTAL COVER NUMBER 2 OF 13 - SIGNED BY GERMAN FIGHTER ACE ERICH HARTMANN AND THEO HECKMANN - Signed Postal Cover by the above. Cover was posted in 1972. Very good condition. COMES WITH  PHOTO OF HECKMANN TAKEN IN 1943 AT KORINTH AND FACTUAL SHEET ABOUT HARTMANN. SLITHER OF PAPER IS FROM ROSSBACHS ORIGINAL LIST. JUST NOTE ONLY 13 OF THESE WERE EVER ISSUED MAKING THIS A VERY RARE COVER.