Hi, can anyone identify this sea green trumpet vase. The vase is diagonally rippled on the outside, measuring approx 1.3cm in width, however, the inside is relatively flat and smooth to touch. This may not be visible on pictures taken, but can be clearly seen in natural lite. The base is rippled and measures 8.4cm dia. The concave polished pontil measures approx. 4.2cm. Vase height 7.2cm, rim dia. 10.7cm. I would be very interested to know the originator and probable age. Thanks