1959 (1 Apr) S31 Central Museum of Natural History - China
Philatelic Co FDC to West Germany, uprated by C50 and S29 single on
reverse,
1959 (1 Apr) S31 Central Museum of Natural History - China
Philatelic Co FDC to West Germany, uprated by C50 and S29 single on
reverse, tied by commemorative d.s. and Peking cds. Scomplete set
(Scott 407-408),
1959.4.1 特31自然博物馆 - 中國集郵公司首日封寄西德，背另貼紀50及特29單枚，銷紀念日戳及北京日戳。
