Frederic Walrath Pottery floral decorated tall mug in their beautiful Marblehead like matte green dark and light glazes. It measures 5 1/4 inches in tall 4 3/8 inches in diameter at the widest, and 6 inches across the handle.  It's in great condition with no chips, cracks, repairs, or firing flaws. Marked on the base with the con-joined MI for Mechanics Institute.