Los 343
1919, First Aerial Post England-Australia, the so-called Ross-Smith vignette in dark blue, sheetlet with margins all round, mint never hinged, very fine, only 576 examples of the vignette were printed, of these 125 were destroyed and another 364 were used on mail; of the remaining 87 mint examples about 20 had their margins removed in anticipation of being used on mails and it is believed that around 25 are held in institutional collections around the world, leaving only about 50 sheetlets available for private collector, signed Holcombe with certificate