cover 1898 (24 Nov.) German 10pf. letter card to Germany bearing German China 1898 diagonal overprint 5pf., 10pf., 20pf. and 25pf., all tied by "TSINTAU/CHINA" c.d.s.; 1902 (6 Jan.) "Senf" envelope registered to Germany bearing German China 1901 3pf. (5), 5pf. and 10pf. tied by "KIAUTSCHOU/DEUTSCHE POST" c.d.s.; 1905 (24 July) envelope (194x129mm) registered to Germany bearing 1901 3pf. (5) and 25pf. tied by "TSINGTAU/KIAUTSCHOU" c.d.s.