Tay Dam - Vietnam

It is stated there the Tai Dam are populating an area between Laos and Vietnam. And the flag has a sun with 24 rays. According to Thomas A. Cseh & John Sylvester Jr the "T'ai Federation, the semi-autonomous area around Dienbienphu, established on March 4, 1948, comprised the traditional sixteen 'chau' (cantons) of the T'ai people. Their flag was composed of three equal vertical design was also pictured on the distinguishing insignia worn by military units made up of ethnic T'ais who fought for the French Far Eastern Expeditionary Corps' First and Second Battalions between September 1946 and October 1949." It is my educated guess, that the Jaume's flag with 24-rayed sun represents the more modern variant of the T'ais' ethnic flag.
Chrystian Kretowicz, 18 July 2002