Kosth vibraphone - is anyone familiar with this instrument?

Is anyone familiar with Kosth vibraphones. I'm not sure if I should recommend this instrument to a young student of mine. It's for sale on kijiji.ca at http://www.kijiji.ca/v-piano-keyboard/belleville/vintage-kosth-vibraphon...

I'm guessing it's Jenco quality. If it's in good shape, I suppose it's worth the $500 they're asking. Can a young student benefit from it and enjoy playing it?

Any thoughts would be helpful.

Thanks!