Inside the blue and white celadon outside the celadon two fish vase official mark of what generation?

The two Song dynasty began to appear! In the Southern Song Dynasty stopped firing! In the Yuan Dynasty and restarted firing! Representatives of the Yuan dynasty Longquan kiln celadon molded two fish pattern Qing dynasty process is the most pure is also the most prevalent! The blue-and-white double-fish mark is more common! Kui dragons are cherished!

Late Qing dynasty blue and white porcelain dish with two fish. Size: caliber 21.5 cm, 5 cm high, color glaze moist into the fetal bone, hand-painted double fish pattern natural smooth and exquisite, hair color calm, old pulp, high foot open mouth.