Prehistoric Polychrome Ramos Casas Grande Jar, 1280-1540 AD, as per Anne Schwermer, research department at the Naturalist Center, Smithsonian Institue, Leesburg, Va. in 2007 from photographs sent to the institute by owner. Geometric in design, showing scrolls, bands and stepped elements in red, white & black divided by white bands into separate zones. Two opposing sides featuring Parrot Heads in opposite colors of black and red banded by white. As found condition, with no restoration, showing only water deposits on bottom and side of bowl. Two small chips on rim of pottery jar. Exception example of Pre-historic Casas Grande Pottery. Measures approx. 6''H x 7''W. COA with pottery, plus letter from the Smithsonian representative Anne Schermer regarding Ms. Schermer's opinion based on the photos sent to her..