"R Sainsbury L/Cpl Per Plane" at left and on reverse by Capt. Bennet at Darwin on 12 December 1919; the vignette and envelope with defects though a not unattractive example of this rare pioneer flight. Photo" /> Air Mail cover 1919-20 ROSS SMITH ENGLAND-AUSTRALIA FLIGHT, ENVELOPE TO SYDNEY BEARING LARGE BLUE VIGNETTE CANCELLED BY "FIRST AERIAL MAIL/RECEIVED/GREAT BRITAIN TO AUSTRALIA" oval d.s. for 26 Febuary 1920 and with a further strike at left, signed<I> "R Sainsbury L/Cpl Per Plane"</I> at left and on reverse by Capt. Bennet at Darwin on 12 December 1919; the vignette and envelope with defects though a not unattractive example of this rare pioneer flight. Photo | Christie's