The two and a half leaves carrying the letter ascribed to Clement of Alexandria were removed from their host volume in the patriarchate library, reportedly for separate conservation, and have not been publicly produced since. Searches reported in the 2000s did not locate them, and no statement of their whereabouts has been published by the library or by anyone else.
What would resolve this A statement from the patriarchate library, or a catalogue entry recording the leaves as a separate item with a shelfmark, would settle whether they are still held. Producing them for ink and paper analysis would additionally settle the authenticity question that currently depends entirely on photographs.
OpenManuscript librarianship and codicology, with analytical conservation science if the leaves are producedScott G. Brown, Mark's Other Gospel: Rethinking Morton Smith's Controversial Discovery