"In the city of 'Ishqábád the newly established Shí'ah community, envious of the rising prestige of the followers of Bahá'u'lláh who were living in their midst, instigated two ruffians to assault the seventy-year old Hájí Muhammad-Ridáy-i-Isfáhání, whom, in broad day and in the midst of the bazaar, they stabbed in no less than thirty-two places, exposing his liver, lacerating his stomach and tearing open his breast. A military court dispatched by the Czar to 'Ishqábád established, after prolonged investigation, the guilt of the Shí'ahs, sentencing two to death and banishing six others - a sentence which neither Násir'd-Dín Sháh, nor the 'ulamás of Tihrán, of Mashad and of Tabríz, who were appealed to, could mitigate, but which the representatives of the aggrieved community, through their magnanimous intercession which greatly surprised the Russian authorities, succeeded in having commuted to a lighter punishment." [GPB202-203]

As usury was forbidden under Islam, the traditional money lenders in Iran were the Jewish sarrafs, who continued to dominate the field after the establishment of the Imperial Bank due to greater loan flexibility and cultural ties. At the time the only form of money in circulation was gold and silver coins.

In 1890 a similar Russian bank known as the Loan and Discount Bank of Persia was founded. The Anglo-Russian Convention of 1907 split Iran into a Russian and British sphere of influence. It assigned to the Russian Loan and Discount Bank the revenues from the amortization of Persian debts in northern Iran, and the same for the British Imperial Bank in southern Iran.

Bank Melli, an Iranian-controlled central bank, was established in 1928. [Colonialism, Nationalism and Jewish Immigration to Palestine: Abdu'l-Baha's Viewpoints Regarding the Middle East by Kamran Ekbal p3; Wikipedia]

Note that The Bahá'í Encyclopedia Project dates his passing 1874-1875.