1/2 Tanka - Firuz Shah Tughluq

Firuz Shah Tughluq's reign was one of the longest and most administratively ambitious of the entire Sultanate period, marked by an aggressive canal-building program, the founding of multiple cities, and a deliberate policy of issuing coinage in billon — a debased silver alloy — to stretch the treasury across his extensive public works. The half tanka in billon represents the fractional coinage infrastructure that kept small transactions functional in a monetized agrarian economy where full silver tankas rarely changed hands among common laborers.

Firuz was also notable for explicitly refusing to execute nobles, a political restraint that weakened central authority and contributed to the Sultanate's fragmentation shortly after his death in 1388.