China 1912-49 Postal History 1921 (February 23) Native Express Commercial Cover, franked on reverse with Junks 5¢ pair and 3¢, all tied by Yenchow cds, Tientsin arrival cds on front with double rectangular boxed ´National Urgent Relief Fundraising Conference´ slogan chop alongside, Tientsin bisected cds with index ´7´ was unlisted by Paul K S Chang, the slogan handstamp was used for a short time and thus rare. Estimate HK$ 2,000-3,000
