cover 1916 (18 Dec.) envelope (250x105mm.) registered to Switzerland bearing 1908-22 1c. vertical pair, 2c., 3c., 4c., 10c. (slightly discoloured) and 1916 5c. and 8c. (perf. faults), all tied by Type D4 c.d.s. and showing, on reverse, Labuan (19.12), Singapore (26.12) and arrival (24.1.17) datestamps