In archaeological excavations in the northwestern part of the Western Wall plaza in Jerusalem, a rare and impressive Hebrew seal was discovered that dates to the latter part of the First Temple period. The seal was found in a building that is currently being uncovered, which dates to the seventh century BC - to the time when the kings Manasseh and Josiah reigned.
http://www.israntique.org.il/article_Item_eng.asp?sec_id=25&subj_id=240&id=1442&module_id=#as