1 Tanka - Nasir ud Din Ahmad Shah I

Ahmad Shah I founded Ahmedabad in 1411, the same year he declared Gujarat's full independence from the Tughluq-weakened Delhi Sultanate. His long reign of over thirty years gave the Gujarat mint time to develop its own coherent billon coinage tradition, distinct from the debased Delhi issues it replaced. The tanka denomination carried over in name but was recalibrated in weight and fineness under local control.