細節
cover 1871 (15 Feb.) XU5 (flap missing and faults at top) to France, bearing 1863-71 2c. and 30c. vermilion sharing superb "S1" in blue, showing unframed "PAID", "P.P." and French c.d.s. in red framed "P.D." in black and, on reverse, "SHANGHAE" c.d.s. in blue, Hong Kong c.d.s. and three French c.d.s.