Thank you very much, Paul - great job done!
You are quite correct regarding my transposition of RD 84386 to RD 84836 - is there a word for a typing 'spoonerism' ?
Joseph Webb (and Jane Webb &c) pieces are comparatively uncommon, so it may be many years before I get photos of the pieces remaining to fill in their gaps on the GMB RD database, but your pics of the design representations are crucial to that end.
The quality of the pressing and finishing of the documented Webb's glassware was excellent by anyone's standards (especially considering that they were made so early on in the history of British press-moulding) and I look forward to further discoveries from their output.
Fred.