Thanks for including those Frank. Each of the Inkwells and Paperweight are interesting and I believe all three were by Paul Ysart. The following comments may be of general interest to readers.
The Inkwell to the left is of a less common form, being more flattened in both the stopper and base than is usually seen (at least by me!). Its stopper confirms an item that I have seen, which looks like a flattened paperweight (2.5 inch diameter) but listed by the owner as "probably a reduced bottle stopper". The form and spaced layout of the canes in the "reduced" one and that of the exhibition example show enough of a match to confirm this.
As for the "shaped / applied pedestal", I think it is very likely "shaped" and probably has a Monart-style pontil. I have a 3.5 inch diameter weight which shows a similar low pedestal foot and is script signed "P. Ysart". The weight can be seen at http://www.btinternet.com/~kevh.glass/pages/paul-ysart/signed/Detail011.htm
. And the foot detail is shown at the bottom of http://www.btinternet.com/~kevh.glass/pages/paul-ysart/signed/base.htm
(row 2, column 1 in the final table)
The second Inkwell has a more regular Paul Ysart shape but is unusual in two respects. The base seems to have a loose group of different canes in the centre, which is something I have not seen before in Paul Ysart's work. There are many known examples of "central clusters of canes" but packed together rather than loosely set. The second unusual feature is that the stopper and neck contain a mix of cane pieces and twists. This is known in a few other Paul Ysart Inkwells and shows that Paul did not always leave the "well section" clear.
As for the paperweight, I imagine that it is of "super magnum" size. The pattern is the same as "PY1005" in the Paul Ysart Catalogue in the ysartglass pages, which as we know is a massive 5 inch piece. There is a 4 5/8 inch example in Perth Museum of the same design. Both have a "py"cane included at the side of one arm of the star. Looking at a 400% enlargement of the Exhibition images, I am fairly sure that the weight also has a "py" cane at the upper inner edge of the arm at the "just-past-2o'clock" position. So this may well be only the third signed super magnum Star weight I am aware of.