Two-and-a-half-satang coin

2 1⁄2 satang
Thailand
Value1/40 Thai baht
Mass1.8 g
Diameter16 mm
EdgeSmooth
Compositionnickel
Years of minting1897
Obverse
Design date1897
Reverse
Design date1897

The Thailand two-and-a-half-satang coin ( 2.5 st. or 2.5 สต.) was a unit of currency equivalent to 1⁄40 of a baht of a Thai baht. It was introduced in 1897 during the early decimalization of Siamese currency and was minted for a limited period before the denomination was discontinued.