Found this one today while walking around Blackheath. Interestingly while the Geoscience Australia name is "Shipley Area" The current (2001) topo 1:25000 map shows the name as "Sentinal" and a previous edition (1980) of the same map as "Blackheath".
Take your pick!
The trig point is on top of a reservoir but is visible from the street.

Rated: for Overall Experience.