Toda
Toda, E. Annam and its Minor Currency. (1882).
Available online: http://art-hanoi.com/toda/
The database contains Vietnamese cash coins, cast from 968 A.D. to 1882.
There is also a group of coins produced from 1882 to 1945, and therefore
not listed in the book, described in the appendix. Reference numbers
from other catalogs are given for these coins.