A FINE PAIR OF ARCHAISTIC SPINACH JADE WINE VESSELS, gu, of tall slender shape with a wide flaring rim and bulbous central section, the central section carved in shallow relief with dissolved taotie masks on a leiwen ground, between a band of geometric and plantain design carved around the base and plaintain leaves and stylised taotie masks around the neck, the whole divided by notched flanges carved with geometric designs (minutely chipped, possible slight rim polish), Qianlong