The "exceedingly rare" Chinese Clair-de-Lune Glazed Porcelain ... What makes the vase so special is the Yongzheng mark on its base. The six-character mark indicates that the porcelain was created ...

And there's a special kind of vase that's called a rouleau vase that was made in China, because this is Chinese ... but not necessarily with the official mark underneath... GUEST: Mm-hmm.