啟定帝
After Khải Định became Emperor in 1916, Hanoi reduced the funds to cast Vietnamese cash coins which had a dissatisfying effect on the Vietnamese market as the demand for cash coins remained high, so another committee was formed in Hanoi that ordered the creation of machine-struck copper-alloy Khải Định Thông Bảo (啓定通寶) cash coins to be minted in Haiphong, these coins weighed more than the old French Sapèques and were around 2.50 grams and were accepted at piastre. There were 27 million Khải Định Thông Bảo of the first variant produced, while the second variant of the machine-struck Khải Định Thông Bảo had a mintage of 200 million, which was likely continued after the ascension of Emperor Bảo Đại in 1926 which was normal as previous Vietnamese emperors also kept producing cash coins with the inscription of their predecessors for a period of time. Emperor Bảo Đại had ordered the creation of cast Bảo Đại Thông Bảo (保大通寶) cash coins again which weighed 3.2 gram in 1933, while the French simultaneously began minting machine-struck coins with the same inscription that weighed 1.36 grams and were probably valued at piastre. There were two variants of this cash coins where one had a large "大" (Đại) while the other had a smaller "大".