Who issued the first predecessor of the currency that is awarded to the winner of the Indira Gandhi Prize?
Indira Gandhi Prize:  The prize carries a cash award of 2.5 million Indian rupees and a citation. Indian rupee:  The rupee is named after the silver coin, "rupiya", first issued by Sultan Sher Shah Suri in the 16th century and later continued by the Mughal Empire.
Sultan Sher Shah Suri