The design stresses Australia's role in the Colombo Plan,
an Asian aid scheme of the time, and depicts the emblem of the scheme.
Helecon: 7,873,143* 22.4.65
Like other issues just prior to decimalisation, helecon papers
were used on any print runs required. Unlike other issues, the differences are difficult
to detect with naked eye, as the image is not washed out or faded.
*The odd quantity released reflects the withdrawn from sale
nature of the definitive.
part of a definitive series
that did not happen. This value replaced the 1959 zoo series 1/- Platypus