another one missing its stopper - but inexpensive, and hopefully someone will have an idea as to origin.
I'm tempted to think not British - the base is 'from the mould', and without any proper pontil depression, and the rim has been ground/polished flat with slight bevel to the outer edge.
Two tone pieces, often with a coloured foot, suggest the 1930's, and the wear is consistent with this sort of date - but guess it could be later. Height is about 7.75" (195 m/m)
all thoughts welcome, and thanks for looking.