SIKH EMPIRE: AR nanakshahi rupee (11.07g), Amritsar, VS1875, KM-20.1, Herrli-01.07.04, inscribed "12" in the extreme lower left of obverse, almost never seen on this type, unlisted by either Herrli or Gurprit Singh, VF to EF, RR.
Estimate: 100-150 USD