hello m - and your later comments are correct - this component at the base of the bowl is certainly not applied. I'm definitely no expert of the construction of drinking glasses, but I believe that Walsh used the traditional method of making these glasses i.e. in three parts.....bowl.....stem....foot, and it appears that your 'blob/knop' is constructed as an integral part of the stem. Oddly, the construction of these particular glasses presents a possible anomaly when it comes to describing this component which, although rather academic, I'm sure could spill a lot of ink.
As we know, these decorative additions on stems are described, usually, as knops. Historically that decorative swelling that joined the bowl to the stem was called 'nodus' in Latin, but in Britain we took the Dutch spelling of 'knoop' or 'knop' - however, with the passing of time it appears that it became standard practise to use 'knop' only when this decorative swelling is specifically part of the stem, and lower than the junction of bowl and stem
. It also became the norm to describe those swellings/components that occur at the junction of the body and stem as a collar or merese (used originally to hide or mask the (perhaps) crude joint).
And the point of all this ............because with these Walsh glasses the 'ring' occurs at the very base of the bowl - where it joins the stem.
So, Peter, what would you call it - a bladed knop, or merese/collar