Northern Song Dynasty Emperor Huizong's imperial use Ru imperial kiln sky-green glazed engraving and incising decoration carved three-clawed dragon pattern six lotus petal flower mouth plate 北宋宋徽宗御用汝官窯天青釉刻劃花三爪龍紋六蓮瓣花口盤 北宋宋徽宗御用汝官窑天青釉刻划花三爪龙纹六莲瓣花口盘: Chinese Ceramics 中國瓷器 中国瓷器