1953/1968, interesting group with 29 australian airletters and aerogrammes all used with Antarctic Territory postmarks incl. different stations as Macquarie Island, Mawson, Wilkes, Davis and Heard Island incl. a few uprated items, attractive pictures printed on front, cachet cancels etc., a few with very minor faults but most in fine condition, most philatelic usages nevertheless an unusual lot! (T) (Tax Method: Regular Taxation)