See Martin Heide, “Impressions from a New Alphabetic Ostracon in the Context of (Un)Provenanced Inscriptions: Idiosyncracy of a Genius Forger or a Master Scribe?” pp. 148–182, in Meir Lubetski, ed., New Seals and Inscriptions, Hebrew, Idumean and Cuneiform (Sheffield: Sheffield Phoenix Press, 2007). Although the ostracon is unprovenanced, the prevailing view is that it is genuine. Allegedly, it came from the debris of the Temple Mount.