British Antarctic Expedition stationary adressed to expedition agent J. Kinsey King Edward VII Land cancelled Mar 4 1909, Victoria Land 1d cancelled Mar 3 1912

British Antarctic Expedition stationary adressed to expedition agent J. Kinsey King Edward VII Land cancelled Mar 4 1909, Victoria Land 1d cancelled Mar 3 1912British Antarctic Expedition stationary adressed to expedition agent J. Kinsey, in Christchurch, most unusually showing King Edward VII Land cancelled Mar 4 1909, closing date of the first Antarctic post office, Victoria Land 1d cancelled Mar 3 1912, opening day of the post office at Cape Evans, again carried on the Aurora to the Antarctic with "LOOSE SHIP'S LETTER POSTED IN ANTARCTICA (penguin) S. Y. AURORA A. A. E.", signed by Capt. John King David