Car flag of Bảo Đại, Emperor of Annam (1926-1945)
Own work based on:✦ Flag of the Imperial Palace of Annam.svg by Goran tek-en

Information from:

Hervé Calvarin, Olivier Corre: L'Indochine. Étude d'Histoire vexillologique. In: Franciae Vexilla. Numéro Spécial 2005, ISSN 1270-0096, S. 89-126; 147-162.
Requested by and knowledge from Antemister
Goran tek-en