That's a Goldstar. Probably from around 1984?
Not sure what those pickups are?
Not sure, the person selling the guitar is an "ordinary guitarist", he doesn't know the details, and the condition of the guitar doesn't seem like he really took care of it. He probably ran out of ideas and the desire to play, he wants money in line with the high prices of Japanese guitars these days, so if anyone "sticks" to the offer