Vira Narayan (1627-1633), Silver 1/2 Tanka, 4.87g, Struck from Tanka dies, SE 1548, Bengali legend on both sides, Obv: ''Sri Srima/d Vira Naaraya/nasya Sake 1548'', Rev: ''Sri Sri/ Krishna Charana/ Kamala Madhu/ Karasya'' (KM# 64, R&B# 34, Bose C-2.1). Extremely fine, very rare.