Date of Issue : 15 Apr 1999
Postmark : Lyons ACT 2606
Denomination : 45c
Stamp Size : 37.5 mm x 26 mm
Paper : Harrisons
Printing Process : Offset Lithography
Since 1980, Australia Post has been issuing commemorative stamps to celebrate Queen Elizabeth II's birthday. Above stamp features HM Queen Elizabeth The Queen Mother together with Queen Elizabeth II; the first time both mother and daughter appear together on an Australian stamp.