"Date unknown. Inactive for many years. Approx. 5 m (17 ft) round stone tower, painted white. Eric Jones has a photo, but the tiny tower has not been found in Bing's satellite view of the town. Jones writes that "In the old days a light used to be placed in the pepper-pot style white tower to assist ships wishing to enter the harbour." Located on the south side of the Annalong River in Annalong. Site and tower closed (private property), but the light can be seen from nearby."
I later found that Annalong Harbour was built around 1820, which would put this most unusual and unique lighthouse at an age of nearer 200 years, than 300. But it still is a most remarkable edifice.
Below and above, the new light at the end of a pier outside Annalong Harbour itself.