Date of Issue : 23 Aug 2022
Postmark : Alice Springs NT 0870
Denomination : AU$1.10
Stamp Size : 37.5 mm x 26 mm
Paper : Tullis Russell 104 gsm, Red Phosphor
Printing Process : Offset Lithography
On 22 Aug 1872, the Overland Telegraph line between Adelaide and Darwin was finally connected. Involving 36,000 poles across 2,839 kilometres, from Port Augusta in the south to Darwin in the north, through territory virtually unexplored by the Europeans, this huge logistical achievement has been called the greatest engineering feat of 19th-century Australia. It dramatically transformed the speed and breadth of communication across the country as well as between Australia and the rest of the world. This stamp issue by Australia Post in 2022 celebrates 150 years of Overland Telegraph in Australia.