Webb Uranium Green Vase

This is a Thomas Webb uranium green vase with a vertical optical ripple running around it. Etched with Made in England Webb in the pontil mark. Circa 1920s-30s.

I don't believe this is from the Gay series of glass. It has an earlier mark than the marked Gay series glass I have seen, and the look and feel of it is different. The colour is not so saturated as the Gay series glass making it almost transparent at it's thinest. A nice big chunk of glass thought.