Rūpiya was first named to a silver coin weighing 178 grains (11.53 g) minted in northern India by Emperor Sher Shah Suri during his brief rule between 1540 and 1545. Suri also introduced copper coins called dam and gold coins called mohur that weighed 169 grains (10.95 g).
which ruler issued the first rupiya in country
Emperor Sher Shah Suri