I looked at this mounting early today and my eyes see what consumers might have missed. The ring was very badly worn, worn out in fact, along the lower edge, probably on both sides. This was a result of years of wear from a wedding ring rubbing against it. The image of the ring in the upper right and lower left of the 4 side images supplied by the seller show the poor, broken condition of the lower portion of this ring.
This ring was die struck, probably in halves and assembled. It was not hand made and if it was hand engraved long ago, that is long worn away.
So, you didn't miss a true bargain because it was worn out.....
Meanwhile the stone was graded as "1 Clarity Flawless". What did they mean? Was this I1 clarity or Flawless or something with absolutely no meaning? This is only one of the many problems with ebay and the like. It is so easy to find misrepresented stones sold by supposedly unaware sellers. Many of the sellers know exactly what they are doing and misrepresenting, and others just don't know much at all. How can one rely on such a system?
Anyway, you didn't miss the buy of the year.