Banko is typically thin walled earthenware originally made by Tokyo potter, Banko, in the 17th century. The style was later copied in the mid-19th century at Kuwana, on Honshu Island. It was also done starting in the 1880's at the town of Yokkaichi. This "tapestry" style decoration is quite desirable, as most Banko features hand painted enamel slip on a monochrome, unglazed ground. I would suspect this piece dates to the early 20th century (1910 - 1920), perhaps imported by one of the American / New York companies like A.A. Vantine. These typically do pretty well on ebay, +/- $50 - $100.
