From the Wellcome Collection. (slightly enhanced)
Original title:
Hong Kong: docks and harbour from the cliffs. Photograph by W.P. Floyd, ca. 1873.
Photo taken from the cliff in Wanchai (where the Chief Justice's House stood). The 1,000 foot pier was more a "500 foot pier" then, likely still under construction.
On the right hand side a muddy stretch of harbour grounds can be seen. It is likely low tide, but it also shows that the water in front of the sea wall was still very shallow. One can imagine the upcoming problems with siltation that finally lead to the closure of the 1,000 foot pier.
The date of 1873 could be correct, but it should be very early in that year or even late 1872.
We have this photo on Gwulo already, this one is much clearer.