Hellenic Children's Museum
Address: Kidathineon 14, GR-10558 Athens, E.U.
Phone: +30-1-3312995, Fax: +30-1-3312997
E-Mail: [log in to unmask]

Well, I don't really know either, but could it be a kind of soap holder that is screwed to the wall and on which a soap bar is "nailed"? It looks like an olive...
Just a guess...

George Manginis