This gets a little involved... It appears that Maya was a brand first produced by the Matsumoto Musical Instruments Manufacturers Association, but distributed and later (1976) acquired outright by the trading house Rokkomann. Mayas were then built at their factory in Kobe until it was destroyed by an earthquake in the 90's. Imports to the UK were rebranded e.g. Avon (Rose Morris) or Columbus. Quality was average for the time.
El Maya, on the other hand, was a deluxe line built for Rokkomann by the Tahara company of Matsumoto, some at the Chushin plant in Nagano. I've played a couple of El Maya LP copy guitars, and they were very high quality.