Thailand Coin ID?

Can anyone definitively id and date this Thailand coin for me?

Numista image search is giving me multiple hits from 1875-1883 but seems to be unclear on denomination.

And my Coin-O-Scope app throws up it's hands on one side and on the other side also gives me multiple denoms from 1875-1883.

Thanks in advance for any help!

You can just search by country and find it quite easily;

N#13247 

I believe it’s year 1875 (๑๒๓๖).

YOU can.  *I* can't read (or even visually distinguish) the script well enough to do so. 
I tried!

But thank you very much!

No problem!

And, well, I can’t exactly read the script either. I just looked at small differences and concluded which one it is. 

Also, you don’t need the script to figure out type, there are only four thai coins with that design;

N#13247, 

N#13248,

N#15281, 

and N#24454.

All with different diameters and weights (which I assume you have acess to on your coin) to help identify the coin.