Took this one to Springfield too as I had never seen one like it. It is small, about 6" in diameter. It has no markings and a glaze that looks like the very dark brown of Findlay. No one there I showed it to had seen one like it. The side view is like a flying saucer. Anyone familiar with this piece? Update: Rick Soller says he has one with an ink stamp for Line Material. Thanks Rick!