The Vijayanagar Empire was founded by Vidyaranya Harihara, who reigned from  1336-1356 AD.

These small coins are only weighing 0.030 grams, and the diameter is from 1.5 -2.5 mm.

Prices are as follows;

    10+   € 4.00 each

Wholesale lot 100 pcs. € 300.00

Read the story;  http://www.maruphilaque.com/product/Vijaya-Nagar-Kingdom.-2-Bele.-World's-Smallest-Gold-Coin-of-AD-1382./2467.cfm