Southern Song Dynasty Ge-ware-type Celadon Basin with Three Legs

This is a Ge-ware-type celadon Basin made during the Southern Song Dynasty.
The shape of the vessel extends straight into a cylinder from the horizontal bottom to the mouth rim, with slight steps resembling bamboo nodes at the center and bottom of the body and below the mouth rim.
It has the typical shape of a basin from the Song Dynasty, with three rounded legs at the bottom.
With a diameter of about 15cm, it is large among basin.
There are 5 marks on the bottom of the foot to support the feet so they don't get crushed.
It is glazed with a Ge-ware-type celadon glaze, which has a much stronger bluish color than the Southern Song Guan ware and Longquan ware from the same period.
Like Ge ware white glaze, the large intrusions make the color of the earth stand out and are black and clear, giving it a rough yet mysterious appearance, like crushed sea-blue ore.

There is no conspicuous flaws.There is aged deterioration on the entire surface, but there is some luster.