Watch List notes:

Australia, Postal stationery, official envelopes, 1913-1914, 1d kangaroo, with O.H.M.S. or On His Majesty's Service on covers, 1d kangaroo stamp with 'OS' engraved in the stamp, type 1 (Kellow PEO1A, large cover); another smaller cover Au 29, 1916, Sydney type 2 (Kellow PEO1B); another large cover as a Registered Letter (from the Treasury NSW), fixed with 4d kangaroo, from 'The Exchange NSW 12 Feb 14' to Singleton, (Kellow -) (illustrated); 1d red with 'OS' engraved on stamp on large blue-gray envelope with printed (OHMS) (differing to Kellow illustration envelope type cf.Kellow EO7 with type 2 'OS' , usuage Education Dept. Melbourne, dated 11 Sept 24 Bendigo, (illustrated) (Kellow -). Used, with faults, all very scarce - rare. (4)
($180-200)