Ad says it was built custom by barefoot yachts in 88 using the origional hull mold.
It is quite possible the hull was laid up 88 or thereabouts. I have personal knowlege of one that was laid up long after production ceased. It was rigged as a schooner and resided for a time at my club.
These sail pretty well as long as they have a breeze o wind. Not a greyhound in light air unless they powered up the rig quite a bit.
If the boat seems to meet your wants, no harm in taking a very long hard look at it.