An unusual molded 'Longquan' celadon-glazed square-section 'immortals' vase

Late Ming dynasty

明末 龍泉窰青釉仙人騎獸圖方尊

the vertical rectangular walls supported on ruyi-form cabriole legs resting on an integral square base, each side carved in high relief with an immortal astride an animal mount surrounded by swirling clouds, all between registers of floral scroll above and below, the wide mouth rim carved around the top surface with a chevron band, covered overall in an olive-green glaze

Height 7 ? in., 19.7 cm