64 Ratti - Beikthano

Beikthano, one of the earliest Pyu city-states in the Irrawaddy valley, was already in decline by the time these pieces circulated — archaeological evidence suggests the city was largely abandoned by the late first millennium, possibly due to shifting trade routes or military pressure from neighboring polities. The ratti weight standard used here derives from the seed of the Abrus precatorius plant, a unit of mass common across South and Southeast Asian trade networks, which places this issue squarely within a monetized economy linked to Indian commercial practice rather than any isolated local tradition.