Assam Kingdom, Rajeswar Simha or Siu-rem-pha ( SE 1673-1691 /1751-1769 AD), Silver Rupee, Sake Era 1689 (1767 AD), Obv: Bengali legend "Sri Sri Hari /Gauri Charana Ka /mala Makaranda /Madhukarasya", Rev: Bengali legend "Sri Sri swarga /dev Sri Rajeswa /ra Simha /Nripasya /saka" 1689 with lion facing left below, (KM # 134 /RB # O 52.1), nice toning, overall pleasing, graded & slabbed by NGC as AU 58, Rare in this grade.
Note: Top-pop, highest graded known coin for the type.