Ewers are a stately and magnificient Canton form. We believe the larger ewers were used for wine or water and the smallest ones for oil & vinegar. All are rare and the smallest might be considered very rare. Here are the similiarities between the 8 ewers pictured here: all have the rain cloud border at the neck's top, below that are leaves pointing upwards, all have a small raised rib around the middle of the base and all have glazed bottoms.