The Sukhothai era has produced more money photduang used, it can be considered "money photduang" is a truly Thai base, with its unique and is used to Exchange Thai domestic turnover as long as possible. Approximately 600 years.
Sukhothai was the northern part of the year, it held that "the sellers" of Thailand's currency, the real. The unique identity. And the exchange current in the longest time, over 600 years.
The Sukhothai period have produced more silver used could be regarded as "silver" is the exchange of real the unique unique. And in exchange for the longest, circulating over about 600 years.