Monochrome blue porcelain vase of baluster form, China, 19th century The body of the vase surmounted by a slightly flared neck, covered with a beautiful sapphire blue glaze. The interior of the vase enamelled bluish white. Apocryphal sigillary mark Qianlong with six characters in blue underglaze on the base. Height : 40 cm Crack from a firing defect under the base. 十九世纪 蓝釉撇口短颈瓷瓶 款：大清乾隆年制