Guaranteed 100% 30 day guarantee to be authentic pre Columbian pottery. I bought a collection, the collectors are no longer with us so I'm having a difficult time with it but I'm sure it's all old. I probably won't list it all at once, but it's all pre Columbian and guaranteed to be so. I won't lie about regions or centuries because I don't know all that and don't have time to become an expert. Selling 7 pieces, largest piece is 5", there seems to be some ancient chips.