thanks Ivo - and you may well be correct with your suggestion of beer or cider - the bowl on this example looks far to uncouth for champers - but I hadn't realized that the hollow stem was created especially to accommodate the deposits/dregs of champagne. This bowl certainly has the look of a pub rummer from the latter part of the C19. I can remember (oh, not so long ago

) when cheap bitter in British pubs produced a fair amount of unfiltered dregs which remained at the bottom of the glass - I think it cost something like eleven pennies for a half pint.
Ref. my comments about octagonal shaped feet - I can now say that apparently S. & W. did produce eight sided feet on some drinking glasses, although that was presumably much earlier in the C20.
Ref. 'The Crystal Years' - R. S. Williams-Thomas - 1983 (page 57)