During World War II, the baht was fixed at a value of one Japanese yen.From 1956 until 1973, the baht was pegged to the U. dollar at an exchange rate of 20.8 baht = one dollar and at 20 baht = 1 dollar until 1978.Before 1880 the exchange rate was fixed at eight baht per pound sterling, falling to 10 to the pound during the 1880s.
The next year, tin coins were introduced for 1, 5, and 10 satang, followed by 20 satang in 1945 and 25 and 50 satang in 1946.
In 1950, aluminium-bronze 5, 10, 25, and 50 satang were introduced whilst, in 1957, bronze 5 and 10 satang were issued, along with 1 baht coins struck in an unusual alloy of copper, nickel, silver, and zinc.
Between 19, a new coinage was introduced, consisting of aluminium 1, 5, and 10 satang, aluminium-bronze 25 and 50 satang, cupronickel 1 baht, cupronickel-clad-copper 5 baht and bimetallic 10 baht.
Cupronickel-clad-steel 2 baht were introduced in 2005.
These were pieces of solid silver cast to various weights corresponding to a traditional system of units related by simple fractions and multiples, one of which is the baht.