Here’s an interesting postcard sent from Hergott Springs, South Australia in 1895bearing a sqaured-circle postmark.

We are thankful for Wikipedia’s historical background:

The first European to explore the area was Edward John Eyre, who passed through in 1840. In 1859, explorer John McDouall Stuart visited the area, and his German botanist Herrgott discovered the springs which Stuart named after him. Initially the area was known as Herrgott (or Hergott) Springs but when the town was surveyed in 1883 4 km South of the springs in preparation for the coming of the railway it was given the name Marree. Marree is said to be derived from the indigenous word for possum. However the railway station itself was given the name Hergott Springs and the town remained known as such. The railway station’s name was eventually changed to Marree in 1917 due to anti-German sentiment after World War I.