Lot 51418 – STRAITS SETTLEMENTS KLM FLIGHT COVER 24 APRIL 1937

1937 (Apr 24) K.L.M. Royal Airlines airmail from Singapore to Switzerland franked with FMS Negri Sembilan 1935-1941 Coat of Arms 1c, 4c, 6c, 8c, 10c, 12c, 25c (until the mid-1930s stamps of FMS were not accepted for use in Straits Settlements, and vice versa, except train mail), very fine and scarce.