A CHINESE YELLOW-GROUND GREEN-GLAZED 'BATS' VASE. The vase rising from a tapered foot to a rounded body before a straight neck, incised with bats flying amongst swirling clouds above a tumultuous sea, with waves crashing around rocky outcrops, all below a band of key frets beneath stiff leaves, the rim decorated with a band of ruyi, all glazed green on a yellow ground, the white-glazed base with a six character Yongzheng mark, 30.5cm H. 黃地綠彩雲蝠紋瓶，「大清雍正年製」款