1 Kc. Airmail with hand stamp overprint "1. X. 1938 plus swastika", in conjunction with horizontal lower margin pair 1 Kc. Masaryk on faultless letter piece used Karlovy Vary 1 4. X. 38 4 d, issued only 105 examples, expertise Robert Brunel VP (2019) "the condition is perfect. ", Michel 500.-