hello m. well, Manley commented that T/Webb had no record of this surface pattern, and commentators from 2012/2013 GMB posts appear to have exhausted all avenues and came to the conclusion there was no justifiable reason for hanging on to the Webb provenance. As for your comments about the Webb catalogue, this is possibly an instance of not being able to disprove a negative, so to speak.
The Webb attribution has been maintained by those who it appears have not carried out proper research, instead relying on prior comments from others only and just copy the wording - combined with the mysterious G.S.F. initials - which as far as I can see have never been shown to belong to anyone at T/Webb who can be linked positively to manufacture of the Rd. 41925 design.
Your link is another States based source, and it does seem the other side of the pond are more than keen to maintain the Webb attribution since it will carry a better price - despite the probable fact that none of them has actually researched these pieces, and what does the comment "Concurs with house" mean?

Looking back to where I added pix of the original photos of the designs from W. & R. (for scale and hammered decoration), my opinion is that the piece in your link shows the hammered design Rd. 39086, and not the scale design Rd. 41925.
Again, only my opinion, but the lack of details of provenance by the auction house, in your link - omitting the W. & R. connection, and attributing their vase to the wrong decorative pattern - shows that research has not been done effectively. Again, like so many sellers of these things, on the face of it there looks to be copying of someone else's description, and not a good one at that.

Have to say that I was surprised that Fieldings described Rd. 41925 (for the scale pattern) in the link to their sale, as being cut - it seemed far more likely that it had to be a moulded pattern.