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. 6.33. Lai Fong (Afong Studio). ‘No. 78. A Hongkong Opium Merchant in full costume. On the thumb of the left hand is a jade stone ring, they use this to place the end of the arrow against when firing with the bow’, 1870s. The sitter and studio setting are the same as in fig. 6.32. Author’s Collection.
See http://gwulo.com/node/31857 for more information.
It is reproduced here with the permission of the author and publisher.