Vietnamese Empire Coin - 1888-1907 - Reign of Thanh Thai [решено]

This is part of a Vietnamese coin collection I purchased while serving in Vietnam in 1972. The Current ID for this coin is:
10 Van coin from the reign of Thanh Thai (1888-1907):
https://en.numista.com/catalogue/pieces3183.html

Hello and welcome,

Whoever labelled that coin as Canh Thinh (1792-1802) was very much mistaken! This is a 10 Van (Cash) coin, as evidenced by the characters on the back; and no such denomination was issued until the late 19th century under the Nguyen dynasty.

This is your coin, a 10 Van coin from the reign of Thanh Thai (1888-1907):
https://en.numista.com/catalogue/pieces3183.html

Thanks, Cass. Much appreciated!