From Dennis George Crow Historic Photography Art & Antiquities:
“CP 030. A studio portrait of a merchants and his accountant with abacuses.
Year: 1870-1880; Photographer: Pun Lun; Type: Albumen Print; Origin: Hong Kong; Size: 24x20 cm”
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Abacus I, detail.
Reference image for Abacus I. Pun Lun, A studio portrait of a merchants and his accountant with abacuses, 1870-1880.