Watch List notes:

INDOCHINA.

Colonie française, 1887-1954. 1/2 Tael (1943). ESSAI in silver. Obv. "Fu" caractere (wealth). Rev. Circular lao legende, value in chinese, word ESSAI punched on bottom. Lec. 321 (plate coin). AR. 17.79 g.
PCGS SP 61
Only 2 ex. minted, of the greatest rarity.