Ancient Thai Amulet - Stylized Buddha

Ancient Thai amulet representing a stylized Buddha.
On the back are a yant and Pali letters.
*
Coin over 50 years old, exact origin unknown.
*
UNIQUE PIECE
--------------------------------------------------------------------------------
Height: 35 mm.
Width: 40 mm.
Weight: 15 gr.
Custom-made waterproof reliquary: Yes