b'96640640** April 1922 (AAMC.64a) Herald Air Mail vignettes; a horizontal pair with selvedge at left & top, mint with full gum. Multiples are scarce. (2). Cat.$400 .$400500641C 21-22 July 1925 (AAMC.80-89a) Adelaide - Melbourne - Sydney per Australian Aerial Services, intermediates group comprising of Melbourne - Echuca, Melbourne - Sydney, Echuca - Broken Hill, Deniliquin - Broken Hill, Hay - Broken Hill, Broken Hill - Echuca, Broken Hill - Mildura, Sydney - Deniliquin & Sydney - Echuca, all with KGV adhesives including 4d Olive (2) & 4d Violet (5); generally fine to very fine,Cat $2700. (9 covers).$1,0001,200642 643642(*) Oct.1929 (AAMC.145b) Eyre Peninsula Airways Ltd vignette (black on yellow), block (4), no gum. Extremely scarce multiple. Cat.$750. Provenance: The Nelson Eustis Gold Medal Collection, Leski Auctions, March 2008. $400500643* Oct.1929 (AAMC.145b) Eyre Peninsula Airways Ltd vignette (black on deep red), block (4). Mint. An extremely rare multiple. Cat.$750. Provenance: The Nelson Eustis Gold Medal Collection, Leski Auctions, March 2008. $400500'