Looks a bit ropey for Webbs and it's not a signature I've ever seen,Webbs pieces are usually finished better,the decor' looks like coraline(think I've got that right)I've a few pieces similar myself and the one Burmese I do have is clearly marked Webbs.To be honest it looks like the seller scratched it on,in my opinion that is,unless it's the Bohemian Stourbridge branch of Webbs!
Keith.