"Bao Zang" (寶藏 bǎozàng) means "treasure, treasury, precious deposits"
Octagonal, diam.-23mm., Wt.-11.5 gms.
This is an Assamese-Tibetan Trade Coin minted by Ahom king Jayadhvaja Simha (1570 or 1648). This coin did not come into large circulation because of Tibetans signed a treaty with Nepal in 1650 for trade only through Nepal.
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来源
1. Rhodes & Bose, The coinage of Assam, Vol.II (2004) pp.10, pp.71, PlateI A7.1
2. Singh & Ahemd, The Coinage and Economy of North Eastern States of India, Numismatic Society of India, Varanasi, pp.178, Plate XI