Though most collectors take dates on coins for granted, dates on coins did not come into wide-spread use in Europe until the 16th century.
Prior to that time most rulers thought it sufficient to put their name on the coin, and maybe a mark for the mint or person who made it.
The Thai currency was initially known in English as the tical.
With support from Britain, Thailand established the royal mint for production of its currency.
Today, although most oriental coins are dated, they are not always dated with an AD date.
Both Japan and Taiwan date their coins by the number of years the emperor or government has been in power.
The country began to issue standardised coinage and banknotes in the 1850s during the reign of King Rama IV.
The Dvaravati kingdom had links to cultures in India and gave origin to the Kingdom of Siam, the name for the nation that was historically located in the region of what is modern-day Thailand.
Coins were also produced by the Sri Vijaya Kingdom, which existed from the eighth to the 13th century.
Numerous other calendars have been used in various areas.
A set of coins using different dating systems can form a fascinating collection.