1 Baht - Rama III Prasat

Bullet coinage of this type — known in Thai as pot duang — was produced by hand, each planchet heated, bent, and punched individually by mint workers. No two are identical in shape. Rama III's reign saw continued reliance on this ancient form despite growing pressure from Western trading partners who found the lumpy, unstamped-looking pieces difficult to authenticate. The Prasat (temple spire) countermark applied to these coins functioned as a guarantee of royal authorization at a time when foreign and debased silver was actively circulating in Bangkok's markets.