Electa model no.WA-1R ? Made in Japan

Found this Electa acoustic-electric guitar I bought in a second-hand shop. After purchasing a dummy I saw the Electa and it was on special! So I swapped it.
I've never heard of the brand but it sounded great and much better than the 1 that I first bought.
I don't know the history nor who made this acoustic/electric guitar. It may be a sample but not registered. Or a first design of an acoustic/electric by some genius I think. I've had it now for about 7yrs and I'm going to keep it. I'm not looking to selling it, but I would like to know more about it.