I know very little about these gambling tokens so I did a quick search of the internet.
H. A. Ramsden, who had one of the largest collections of Thai tokens in the world, wrote on page 6 of his book "
Siamese Porcelain and Other Tokens": "Porcelain, including earthenware and potter's clay,
glass, (coloured in most instances) lead, bronze and other alloys, as well as mother of pearl (nacar) have been employed for the manufacture of these counters".
On page 59 (Plate XIV No. 253) of his book is a token with the same inscription as yours. It is a different shape and, probably, a different material.
Ramsden does not identify or translate the inscription.
However, the inscription is
cai yuan guang jin (財源廣e). A colloquial translation would be "(May) extensive wealth enter your house".
The reverse side has the Chinese character
qian (e) which translates as "money" but, in this case, may designate a value (denomination) of money or a weight.
Again, I have no expertise in this area and, with so many fakes on the market, cannot vouch for the authenticity of your token.
Gary