1 Kupang - Malik al-Adil

The kupang was the smallest gold denomination in circulation across the Malay peninsula, functioning as fractional currency within a monetized economy that ran heavily on the tin trade and tributary exchanges with Siam. Kelantan's position as a vassal state — paying gold to Bangkok while simultaneously asserting its own Islamic coinage — meant these tiny pieces carried real political weight far beyond their mass.

The title Malik al-Adil, "the Just King," was a formulaic honorific rather than a name tied to a specific sultan, which is why attribution to an individual reign within this fifty-year window remains unresolved.