Hello
Here is my nice set of silver bullet coins

The biggest one is 15.2g so it's a 1 baht - probaby Rama I
https://en.numista.com/160446
The second big one (2g) is probably 1/8 baht = 1 fuang. Rama IV?
https://en.numista.com/33637
This one is 0.52g and has very odd shape. Here I ask for help as I didn't find any reference.

The small one is 0.32g so I assume the only option is 1/32 baht = 1 pai although the ref one is 0.5g so heavier significantly. Taksin?
https://en.numista.com/151165
Finally, the tiny 0.24g is a 1/64 baht = 1/2 pai
Numista ref shows Rama IV as the issuer
https://en.numista.com/151164
Please correct me if I made any mistake in describing the above and assist with the 'odd shape' one (0.52g)