50 Heller to 20 coronas airmail issue with overprint \"we are free! Plus swastika\", 3 coronas blackish brownish purple, 4 coronas gray blue, 5 coronas blackish siena, 10 coronas blackish ultramarine, 20 coronas in A-perforation, Michel number 21 and 27 with overprint flaw IV, unused with original gum, faultless condition, unsigned, expertise Robert Brunel VP (2023) \"the condition is perfect. \", Michel 3.810.-