From what I can tell it was probably made in the late 90's. No idea what woods but Yamaha doesn't make junk. That said, it's also a 20 year old guitar, which means potential issues. Look it over very carefully, especially the neck angle. Take an 18" straightedge and lay it edgewise along the frets. The edge of the ruler or whatever you're using should come even with the top of the bridge. If it hits significantly below the top of the bridge the guitar has issues. Look at the bridge from the side. It should sit level with the top of the guitar. If it's tilted toward the neck the guitar has issues. Take a good look at the saddle. If there's barely any saddle sticking out of the bridge the guitar has issues. Check for cracks or gaps. Check the frets and if you see gouges or divots the guitar needs fret work, which isn't necessarily a deal breaker but also isn't cheap. It was a nice guitar 20 years ago but it may not be today.