Something else - without a thorough hands-on examination I'll simply call it a generic low-end '70s "Lawsuit Era" Japanese L-5CES knockoff, sold under a variety of names depending on the market; headstock looks similar to some early Yamaha archtops but wider at the top, general workmanship doesn't appear to be on quite the same level as the period Yamaha or Ibanez instruments, and both the original tuner hole placement in the headstock and the truss rod cover suggest a downmarket instrument with cheaper OEM hardware. Although there's no price tag on sentimental value, if it were mine I'd simply keep it as a fond memory - many of these instruments were idiosyncratic at best when it came to their construction, and rebuilding/restoration can become prohibitive price-wise...
Welcome to the Forum - hope this helps...
