Try to find the spot where the photographer was standing.
At the SW corner of George and King Streets. See - www.flickr.com/photos/powerhouse_museum/2362669437/
Now the site of the Apple store.
Foundation stone laid 16/6/1884. Full details of the planned building - trove.nla.gov.au/ndp/del/article/13563473
[https://www.flickr.com/photos/[email protected]] Good stuff there!
"In 1885 a cable support disguised as an ornamental verandah front was erected along the western side of George Street from the G.P.O. to what is now Railway Square. (ref 3'4'5) This is a distinctive feature which can be seen on many photographs. It became the backbone of the network with pole routes branching off at every cross street. The pole route in this section of George Street was replaced by a smaller one carrying only telegraph wires. The cable support was superseded before 1900 but was not all demolished. Shopkeepers had been allowed to use it to support awnings, and where they had done so it was left in place."
From - telephonecollecting.org/lightpoles.htm
I am betting on 1888 for the date, like many of these wonderful Henry King photos - I have an old hunch that he produced a Centenary album.
2 weeks ago
2001:8004:d03:72a3:b4f8:a8cb:5cc7:d4ff suggested this image
location is -33.8689, 151.207