GROUP OF 10 PIONEER FLIGHTS: 1919-76, postcard commemorating Harry Butler Flight across St. Vincent Gulf of 1919 (creased), two questionable covers of Fremantle-Derby and Fremantle-Geraldton, First Trans-Continental Aerial Mail Perth-Sydney of 1929, Australia-England Experimental Flight of 1932 and others, in addition Australian Antarctic FDC and two modern flown covers from Papua New Guinea, some flaws mentioned, still F/VF, Est. $300-$400 (Image)