1969 5c Seal AAT Set of 4 Base Covers APO Shield 1969
Very interesting set.
They are all address ed to the same person.
They all state they are First Day Covers 4th Dec Macquarie Is, 13th Jan, Mawson, 8th Of Feb Wilks, and Davis on the 20th of Fed.
The Davis cancel has had the date changed by hand.
Wilks is stamped Opening of Repstat