In find of biblical proportions, seal of Prophet Isaiah said found in Jerusalem | Times of Israel
Chanced upon near a seal identified with King Hezekiah, a tiny clay piece may be the first-ever proof of the prophet, though a missing letter leaves room for doubt
Sacha Stawski
https://www.haaretz.com/archaeology/MAGAZINE-prophet-isaiah-s-seal-mark-may-have-been-found-in-jerusalem-1.5844352