Here is a 62 piece Segmented Bowl, made with Tulip-Liriodendron and Black Walnut wood.   This piece is signed with a Circle around an A , and dated 1982.   This bowl measures - 2 3/4" tall, and 4 1/4" wide.  This bowl is in Mint vintage condition with no damage.   The beauty of the wood and the remarkable craftmanship in this bowl is quite amazing!    Only another wood turner would see the distinct quality of this bowl, Just Beautiful!    Enjoy.