Lot 41137 – Czechoslovakia —> North Korea 1959-1960 diplomatic mail from Praha

1959-1960, Group of 7 airmail covers from Praha (Czechoslovakia) —-> Phyongyang sent under diplomatic pouch to a Czech border observer, all are showing on dispatch a red date line cachet : Doslo na MZV dne……………. or date only (MZV was the abbreviation for the ministry of foreign affairs under Communist Czechoslovakia), all but one are with original contents still, scarce group