Australia: Aerogramme Uprated with "Paid" Meter Mark

Stein A-25, uprated with a red "Paid" meter mark G.P.O. Adelaide 6 OCT 1967 to meet the 10 c aerogramme rate, which was in place since October 1, 1967.

This is an advertising aerogramme of Pacific Flights, a philatelic company.

 

References:

Stein, The Aerogrammes of Australia and Its Dependencies, 1944-1980