This image previously appeared in Terry Bennett's "History of Photography in China: Chinese Photographers 1844-1879", published by Bernard Quaritch in 2013, with the caption:
Fig. 6.52. Apong & Co. (How Wa). Studio advertisement from the Chronicle
& Directory for China, Japan, the Philippines &c., 1878.
See http://gwulo.com/node/31857 for more information.
It is reproduced here with the permission of the author and publisher.
Date picture taken
unknown