1 Ratti / 1⁄100 Unit Thaton

Thaton, the Mon kingdom in the lower Irrawaddy delta, operated one of the earliest monetized economies in mainland Southeast Asia, and its fractional silver issues reflect trade demands too fine for larger denominations to serve. At 0.10 g, this piece circulated alongside the Indian ratti weight system that Mon merchants adopted from subcontinent commercial networks well before Burman expansion ended the kingdom in 1057.