Cooch Behar, Nara Narayan (SE 1433-1477 / 1555-1587 AD) , Silver Tanka (Rupee), SE 1477, Obv: Bengali legend "Sri Sri/ Siva Charana/ Kamala Madhu / Karasya" in four lines within circle, dotted border, Rev: Bengali legend "Sri Sri/man Nara/Narayana Sake/1477"; star at end of the top line, all in four lines within circle and dotted border, 10.18g, 30.00mm, (KM #36/RB # A6.25), choice extremely fine.

Estimate: INR 4000 - 5000