deep blue Indigo stacking flask

Made in Jiajing reign of Ming dynasty, 16.7cm high, its diameter of the mouth is 8.7cm, second class culture relics. It was an old collection of Jingdezhen Ceramic Museum, now it is collected by Jingdezhen China Ceramics Museum.
   Features: trumpet lip, long neck, oblate round belly, flared foot.. The body is sacrificial blue glaze, using cobalt dioxide as coloring agent. The glaze is glossy and transparent, and there is a dragon on the shoulder, which is unglazed and lively.