Host Mark L. Walberg and appraiser Marshall Martin head to the world-renowned San Diego Zoo to discuss the appeal of vintage Steiff animals, the plush-toy phenomenon started more than 130 years ago. Highlights include an original, handwritten draft of the 1933 popular American song "Stormy Weather," recorded by the likes of Lena Horne, Frank Sinatra and Ella Fitzgerald; an heirloom circa 1864 Tiffany cameo complete with a collection of authentic period jewelry; and a turn-of-the-century aristocratic portrait by Robert Henri, valued at $ 250,000 to $350,000.