This is the first ever book about Thai coins and ethnographic monies in English. It covers the time period from the earliest proto-state up to the introduction of the baht currency system. It describes the development of Thai money through a continuous economicohistorical review with excerpts from a variety of sources, including the Sukhothai inscriptions, the Royal Chronicles of Ayutthaya, the records of individual Dutch, French and Portuguese travellers and unpublished documents from the Royal Archive. Also featured are over 1,000 specimens of the coins which have circulated in modern-day Thailand and its tributary states. Included are a selection of Thai documents from Rama IV's reign dealing with the emission of new currency, counterfeits and money reforms.