A BLUE-GLAZED GU-FORM PORCELAIN VASE Wanli mark, 17th centuryPROPERTY OF VARIOUS OWNERSA BLUE-GLAZED GU-FORM PORCELAIN VASEWanli mark, 17th centuryHeavily potted in archaic gu form, the bulging midsection and flaring foot accented with a pair of vertical flanges, the trumpet neck encircled by a raised fillet, all under an even cobalt-blue glaze, the base inscribed in underglaze blue with a Wanli six-character mark. 9 3/4in (25cm) highProvenance:English Private Collection, acquired in the 1980s, by repute -