80 Ratti

The Pyu city-states of central Burma operated a sophisticated monetized economy centuries before most neighboring mainland Southeast Asian polities adopted coinage at all. Beikthano, one of the earliest Pyu urban centers, was already in decline by the time these pieces circulated — archaeological evidence suggests the city was largely abandoned by the 9th century, possibly following Nanzhao raids from Yunnan.

The ratti weight standard derives from the seed of Abrus precatorius, used across South and Southeast Asia as a jeweler's measure. At 80 ratti, this denomination aligns closely with the Indian karshapana tradition, pointing to direct mercantile contact with the subcontinent rather than independent monetary invention.