Beautiful drip glaze serving bowl by Greg Wenz, a ceramic artist based in Mesa, Arizona, 

Vase is a gorgeous example of his complex and interesting glaze combinations, Lot of blues and browns. Wheel thrown.
Signed "Wenz" and dated 1983.

Measures 8.5'' tall and about 7'' at the widest part of the vase
Base is 3.5'' and mouth of vase is a little under 2&3/4''