Air Mail cover 1931 (3 Apr.) illustrated envelope of the Aero Philatelic Club of Calcutta carried on the flight from Calcutta to Singapore and endorsed in green ink "Hollywood to Singapore, John E. Pratt 11.4.31, Ross Hadley" with Singapore arrival c.d.s. and straight line "POSTAGE DUE" in red. 20 carried. Muller 95