1955, 5 Year Plan 7 values FDC 15/12/1955 and complete set on two covers to GDR and Czechoslovakia each showing special cachet in violet or red, some usual crease and gum spots, fine trio
68; Übersee A-Z; CHINA - VOLKSREPUBLIK (PRC); Markenausgaben
68; Overseas A-Z; CHINA - VOLKSREPUBLIK (PRC); Stamp issues