Without wishing to belittle your find, I'm confused.
There is no "Thai dollar". The baht is the largest currency unit in Thailand, divided into 100 satang.
Yours is dated for the Buddhist year 2533 (=1990 in our calendar) and produced in base metal (cupro-nickel). 'Numista' values it under $1 (US) even in uncirculated condition. Other catalogues may put it a little higher, bur certainly not as high as $150 or $200.
I note that the very
same photograph you posted is used by the Esty seller 'MonedasOrt', where it is incorrectly described as "vintage from the 1980s" and with a completely unrealistic price for such a common coin. I am not providing a link to the offering in order to not offend TreasureNet rules.
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