50 Pfg Universal Postal Union with Soviet Zone 10 Pfg heads and 24 Pfg people congress on correctly franked registered First Day Cover with special cancel" (10 b) ZWICKAU (SACHS) 1 / mountain and ROBERT SCHUMANN city 9.10.49" to Reichenbach with arrival postmark, the 50 Pfg top left on face rubbed spot, otherwise in perfect condition, First Day Cover of this issue are rare, photo expertize Paul BPP "the stamp impressions are genuine and date-appropriate. There is transported First-Day-Cover (First Day Cover) before. ", Michel 400.-