On June 18, 2003 the Israeli Antiquities Authority (IAA) published a report concluding that the inscription is a modern forgery based on their analysis of the patina. Specifically, it claimed that the inscription was added in modern times and made to look old by addition of a chalk solution. In 2006, Wolfgang Elisabeth Krumbein, a world's renowned expert in stone patinas called by the defense counsel, analyzed the ossuary, and concluded that "the inscription is ancient and most of the original patina has been removed (by cleaning or use of sharp implement)". He further noted in his report, "any forgery of three very distinct types of patina, if ever possible, requires the development of ultra-advanced techniques, in-depth knowledge and extensive collaboration of a large number of experts from various fields". According to his analysis, the patina inside the inscription took at least 50 years to form; thus, if it is a forgery, then it was forged more than 50 years ago.