1927-30 2 airmail entires: 1x Reg and airmail letter to Czechoslovakia, franked with airmail stamp Mi.378, 380 and 381, CDS BERLIN 19.12.27, arrival postmark + airmail card to Görliz, franked with airmail stamp Mi.379 and postage stamp Mi.431, CDS KÖLN 6.4.30, transit BERLIN, arrival postmark