Elaine — I had to smile when I looked at this, as I was mystified by where you took the photographs. It looks as if it is standing on a piece of coal in a coal cellar!
The single raised thread looks as if it could have been machine threaded, but is much more likely to have been mould blown. In which case you were right to suggest Walsh, the masters of mould-blown patterns amongst the greater Stourbridge glass houses. The difficulty I have is that a well-spaced single spiral is a new pattern to me.
Otherwise all the features I can see, including the wavy rim by former rather than thrown as you see on some Whitefriars pieces, and what I can see of the join, are consistent with a Walsh attribution. The lack of a pontil scar suggests to me a later date, probably early C20.
Finally it is always useful to glance at the three Richardson photographs in Lesley Jackson's
Whitefriars Lookalikes (Glass Association Journal Vol. 5, 1997), to remind yourself that most of the Stourbridge glass houses were capable of making anything, and that attributing these pieces is not an exact science, as Leni has also suggested above.
Bernard C.
