A Very Rare Chinese Undergalzed Red and Blue Hexagonal Facetted Vase Sturdily potted of hexagonal section, the baluster body with broad and angular shoulders, elegantly sloping up to a waisted neck and a flaring mouth, the facetted sides finely painted with red glazed dragons soaring sinuously amidst flaming wisps , alternating with sprays of lotus, peony and orchid , the high shoulders painted with a fret-work border above a band of pendent ruyi lappets, below the slightly-waisted tall conforming neck decorated on each facet with further upright sprays , the mouth collared by a further ruyi heads band lappets, all raised on a prominent splayed foot, the countersunk base inscribed with a six-character reign mark in underglaze blue H:53CM W:27CM