Thai numbers:

Dates on Thai coins are read from left to right. = 2549

Late 19^th and early 20^th century coins used two different numbering systems CS and RS.

Typical CS date: = 1244 + 638 = 1882 AD. This number system originates from the creation of Siam as a country in 638 AD.

Typical RS date: = 124 + 1781 = 1905 AD. Dating from the start of the present ruling dynasty in 1781 AD.

The current numbering system, from 1913 to the present, is based on BE dates (from Buddha’s enlightenment in 543 BC).

Typical BE date: = 2550 - 543 = 2007 AD.