cover KIUKIANG: 1900 (21 Dec.) envelope registered to Germany "through German Post Office, Shanghai" bearing C.I.P. 5c. block of four cancelled by a fine strike of Kiukiang bilingual c.d.s., one stamp partly obscured by France "Chine" 50c. tied by "SHANG-HAI/CHINE" c.d.s. with both registration h.s. alongside and the appropriate transit marks on the reverse, fine