Lot 2888

1950 Tsinghuayuan (5 May) to USA, f.w. North China People's Post Field Workers and Factory $3000 + R series issue $100, for $3100 international letter rate, tied by Peking Tsinghuayuan cds. Cover opened at left.

1950.5.5 清華園寄美國，貼華北人民郵政生產圖100元 + 天安門普票100元，合國外信函郵資，銷北京清華園三格日戳。封左側打開。