Photo supplied from John Breen's private collection.
There is also a copy of the same photo in the Royal Asiatic Society collection in London.
A Bonhams catalogue dates it to the 1880s: http://www.bonhams.com/auctions/11946/lot/28/
The number on the policeman's collar is 132 - can anyone identify the year from that?
I'd also be very interested to know if anyone recognises the location.