I have another piece of glass I would appreciate help in identifying the maker. It is thick walled , stands 11cms in height, the rim diameter is also 11cms. The base is polished with a large ground out pontil mark. The glass has a light blue tinge to it. It has the look of a Whitefriars 9364 William Wilson but not the right size. The colour and feel reminds me of Stromberg glass but none this shape that I could find. Any ideas?