Steven — An interesting piece, and, as you intimated, quite likely Walsh, at least until I took a close look at your third photograph. Here, at the join of the vase to the foot, you can just see the dip-moulded pattern on the main vase, which seems to be twelve? vertical bands of tight ribbing, separated by broad bands of plain, unpatterned glass.
If so, then your vase is certainly by John Walsh Walsh. The general style is called Walsh
Mother-of-Pearl, and comprises a tiny initial gather of opal glass, built up with several layers of clear crystal before being dip-moulded, here with the spaced rib pattern. Note that this old use of the term
Mother-of-Pearl has no connection with modern American collector terminology for air-trap, often abbreviated to just
MOP.
The pattern is shown on Walsh registered design No. 582840 of 28th April, 1911. It is not clear whether the pattern was part of the registration or not, as the registration was of just a drawing with no descriptive text. The two published sources, Reynolds and Gulliver, describe the registration as of a vase or flower holder, confusingly ignoring the dip-moulded pattern shown in the drawing. So it is possible that this spaced rib pattern dates from some time before the design registration. However the registration confirms that the pattern dates from April 1911 at the latest.
Walsh
Mother-of-Pearl glass was made well into the 1920s, and possibly later.
Thanks for showing us your beautiful vase.
Bernard C.