Of course, you are assuming the mass-produced ceramics found in Argentina is the same material. But what if it is not? There were actually a number of other sources for mass-produced trade pottery. I always find it fascinating when someone uses the term "overkill" when another suggests scientific testing of something. What could it hurt to conduct chemical composition studies of pottery. Ron May Legacy 106, Inc. In a message dated 11/3/2008 2:04:24 P.M. Pacific Standard Time, [log in to unmask] writes: http://www.chipstone.org/publications/CIA/2001/MillerHunter/MillHuntIndex.html **************Plan your next getaway with AOL Travel. Check out Today's Hot 5 Travel Deals! (http://pr.atwola.com/promoclk/100000075x1212416248x1200771803/aol?redir=http://travel.aol.com/discount-travel?ncid=emlcntustrav00000001)