Overview: Items appraised in New Orleans (Part 2 of three) include a Howdy Doody doll, a 1751 English silver tankard and a book about the U.S. Constitution from Jefferson Davis's library. Then there's a 1935 art-deco promotional poster for the ocean liner Normandie that appraiser Nicholas Lowry calls “part of the visual vernacular,” and a rotating oyster plate from 1857 that appraiser David Lackey calls “the holy grail of oyster plates.” Also: host Dan Elias visits restored New Orleans homes and surveys the Newcomb-pottery collection at the Lousiana Museum.