In El Paso, Texas, ANTIQUES ROADSHOW host Mark L. Walberg and appraiser John Buxton head to the Centennial Museum to check out beautiful pre-Columbian pottery from the Casas Grandes culture. Highlights include a 19th-century Fiji split whale's tooth necklace; Andy Warhol's 1966 artist's proof of a print of Jacqueline Kennedy; and a 1937 first edition copy of The Hobbit, with original dust jacket and author J.R.R. Tolkien's signature, valued at $80,000 to $ 120,000.