1947年9月20日寄伦敦航空封, 贴邮资二百七十圆, 销渖阳日戳, 另贴有航空签纸.China Provincial Issues North-East Provinces 1947 (20 Sept.) envelope sent air mail to London bearing $270 franking tied by Shenyang c.d.s. with a second strike alongside and turquoise on white Par Avion etiquette; two vertical folding creases at left. Unusual Shenyang dater. Pays postage $1100 and air mail $2100