細節
cover 1863 (7 March) unfranked yellow XU5 (opened out for display) showing on face fine red "SHANGHAE/C/PAID" c.d.s. (Type 6), together with companion despatch c.d.s. in black (Type A) on reverse; also E.L.'s (3) from Shanghai (1837) and Canton (1847 and 1848). Some wear along folds.