SIKH EMPIRE: AR nanakshahi rupee (11.05g), Amritsar, VS[18]"9", KM-21.1, Herrli-01.10.04, VS1884 series; error date, as the engraver forgot to include the numeral after "9", or perhaps considered it "90", reading the diacritical dot above band as "0", possibly unpublished, EF, R.
Estimate: 100-130 USD