1920 Pioneer airmail: piece approx 7 x 2.5cm with 2d GV canc Blenheim cds 3 SP 20. 1PM & fine complete h/s (violet) "PER AERIAL MAIL". Ex cover carried by Captain Euan Dickson on flight ex Blenheim to Christchurch via Kaikoura 4-6 Sept 1920. NZAMC #25, complete cover cat $1500. Rare item. (Image)