Among the items presented for auction at Christie's Rockefeller Centre on June 6, 2013 is a Gnathian bell-krater (lot 600). Its collecting history ("provenance" [sic.]) is provided as "Art Market, Switzerland, 1994".
My colleague, Cambridge University researcher Christos Tsirogiannis, has identified the krater in one of the photographic archives seized in Switzerland.
Who is consigning this krater for the auction? Who is the present proprietor?
Can we presume that the staff at Christie's have contacted the Italian authorities as a matter of urgency?