1934 (10 Dec) airmail cover (opened three sides) from Nottingham to Kerang (Vic) carried on the second direct flight from England to Australia. Franked 4d representing only the surface rate plus airmail within Australia, the correct rate was 1/3d and hence 10½d underpaid, indicated by hexagonal 'T' handstamp with mss '210' (gold centimes), and with 'T' in oval added on arrival with mss '1/9' double deficiency. Reverse with 1941-36 ½d pair, 2d pair and 4d block of 4 Postage Dues cancelled Kerang cds 1 JA 35. A fine underpaid air mail cover