Text on Flickr:
One of five photographs from Hong Kong in our family collection. John Mitchell Dunlop was based there for a short while during the early 1880s, and qualified as a ship's engineer during that period. He later settled in Bangkok, becoming manager of the Bangkok Dock Co.Ltd..
Remark: JM Dunlop worked for Blue Funnel Line at Holt's Wharf.
Probably also from the Pun Lun Studio.