Three-legged Round Washer with Drum-nail Patterns,Jun Ware

This washer is in a drum shpe, with three legs in ruyi shape. It is also decorated with drum nail shaped pattern. The glaze is blue, and appears slightly azure. A special earthworm pattern can be seen on the inner bottom, which is a typical Jun Kiln character.On the bottom, a chinese "1" is carved, which means this washer is the largest one among the kind.