Overview: Items appraised in Kansas City (conclusion) include a 19th-century fish tank, a 1799 Italian majolica jug, an English stopwatch made by the same clockmaker who made Big Ben and a late 19th-century pressed-tin Coca-Cola advertising sign that proclaims “specific for headache.” Then there's a gold-plated Roy Rogers holster set that was awarded to its owner as third prize in a 1957 write-in contest. She was disappointed that she didn't win the grand prize: a pony. But, as appraiser Noel Barrett tells her: “If you'd gotten the pony we wouldn't be here now.” Also: Nan Chisholm of Sothebys reviews the career of Kansas City painter Thomas Hart Benton.