Any ideas? Polished pontil, and base ground and polished sufficiently to prevent wobble. 20x15cm 4.5cm at highst point. Fine wear to base that could be 10 years or 50 years worth. The green appears to be at the edges only, fading gradually to clear and there is a single streak of green central on the pontil, the gold was applied in sheets with some overlap at the edges.
(http://www.ysartglass.com/forum/greendish1s.jpg)