Air Mail cover 1920 (26 Feb.) envelope (opened-out, vertical filing folds) to Melbourne, bearing 1918-23 1½d. black-brown and Ross-Smith blue vignette, both tied by "FIRST AERIAL MAIL/GREAT BRITAIN TO AUSTRALIA/RECEIVED" dated cachet with another strike alongside. Photo
Air Mail cover 1920 (26 Feb.) envelope (opened-out, vertical filing folds) to Melbourne, bearing 1918-23 1½d. black-brown and Ross-Smith blue vignette, both tied by "FIRST AERIAL MAIL/GREAT BRITAIN TO AUSTRALIA/RECEIVED" dated cachet with another strike alongside. Photo

Details
Air Mail cover 1920 (26 Feb.) envelope (opened-out, vertical filing folds) to Melbourne, bearing 1918-23 1½d. black-brown and Ross-Smith blue vignette, both tied by "FIRST AERIAL MAIL/GREAT BRITAIN TO AUSTRALIA/RECEIVED" dated cachet with another strike alongside. Photo