B. Rigold and Bergmann were a London firm (69, Bishopsgate, London, E.C.), apparently established in 1876 that traded with India and China.
B. Rigold & Bergmann
An early postcard summarizing the value of British Indian coinage, one rupee and below, in silver and copper. One British pound at the time was worth 240 pence, with 1 Rupee worth 16 pence (the 'd' on the card). Another postcard summarized the value