Territory of New Guinea-1931 and 1932 Bird of Paradise Postage Stamps-With Air Mail Overprint-Illustrated

Illustrated below are the two varieties of "Bird of Paradise" stamps issued for New Guinea in 1931 and 1932. The original issue was a commemorative stamp issued for the tenth anniversary of Australian adminstration. The stamps from this set were issued with the dates inscribed at the base of the stamp. The second issue of 1932 had the stamp re-drawn with anniversary dates ommitted.
At this time the Territory of New Guinea had no specific air mail issue therefore some of the stamps from these sets were overprinted with an air mail overprint. The examples shown here are both overprinted versions of the stamp.