成泰帝
On 1 August 1898 it was reported in the "Bulletin Economique De L’Indo-Chine article; Le Monnaie De L’Annam" that the Huế Mint was closed in the year 1887, and in the year 1894, the casting of cash coins had started at the Thanh Hóa Mint. Between the years 1889 and 1890 the Huế Mint produced 1321 strings of 600 small brass Thành Thái Thông Bảo cash coins. These small brass cash coins were valued at 6 zinc cash coins. In the year 1893, large brass Thành Thái Thông Bảo cash coins with a denomination of 10 "văn" (十文, "thập văn"), or 10 zinc cash coins, started being produced by the Huế Mint. The production of Thành Thái Thông Bảo cash coins were resumed at the Thanh Hóa Mint between the years 1894 and 1899. Under Emperor Thành Thái gold and silver coinages were also produced.