5 - 40 Pfg bell left, 5 values complete, on 2 first day covers, the 5, 20 and 40 Pfg on airmail-register First Day Cover with special cancel\" (1) BERLIN CHARLOTTENBURG 9 / Europe Zug 06.8.51\" to Hamburg with arrival postmark, the 10 and 30 Pfg on illustrated First Day Cover with special cancel\"May demonstration / BERLIN NW 40 1. May 1951\", faultless condition, on first day letters one of the rarest Berlin issues ever, exhibit for the large collection, Michel 2.700.-