Souvenir sheets issue \"Heydrich\", no. 23, souvenir sheet for Participant at the commemoration as well at high place personalities, special print the Heydrich stamp on pale yellow art paper, harrow perforation 13 1/4 : 13 3 / 4, original format, photo expertize Krischke (2007) : \"is genuine and has full original gum. He is foxed. The small small crease are however manufactured\" - an actual fine example of the rare issue - the manufactured small crease the Mr. Krischke in his certificate mentions are one of the authenticity characteristics the authentic gum, the small little stain on the back are very inconspicuous and on face not visible!