Analysis of information sources in references of the Wikipedia article "Brahmic scripts" in English language version.
In the classification of scripts provided by K. S. Singh and Manoharan ..., Meithei Mayek is part of the Tibetan group of scripts, which originated from the Gupta Brahmi script
The coins of Urakonthauba (568-653) and Ayangba (821-910) in the Mutua Museum, Imphal bear evidence of early existence of old Manipuri alphabet.