A Chinese celadon glazed vase, cong, of archaistic quadrangular form, the sides moulded at the corners with the eight trigrams arranged in two columns divided by a continuous double line, surmounted by a broad tapering circular neck, and supported on a short cylindrical foot, covered overall with a rich grey-green glaze, with apocryphal Qianlong mark six-character seal mark in underglaze blue, possibly 19th century or later, 14cm high 青釉琮瓶