Hamburg-Altona 1, 30 Pfg registration label with fee function as well vertical pair 12 Pfg first issue of stamps for Germany after WW II. On R window envelope from Hamburg 28.9.45 to Cuxhaven with appropriate arrival postmark, label slightly inky, franking lower left round corner, nevertheless decorative commercially used letter the "Hamburg Sparcasse", expertized Zierer BPP