It's possible these engraved pieces are - the slightly everted rim and short stem are features of jellies, but they are almost too short - are those panels cut or moulded?? - could be wrong but they look moulded to me - look closely against a good light - if they're cut then you should see some remains of the lines from the wheel no matter how well they were polished - these line will run at 90 degrees to the axis of the stem.
Jellies, generally, tended to be slimmer and taller than custards most of which, post 1850, had handles anyway - jellies didn't - have a look in S. & F.
Are you able to take pic of the backstamp on these engraved pieces ?? - it won't tell us what they were designed for or exactly when they were produced, but might give a pointer to period of manufacture.
As we don't know the Rd. No. for these engraved pieces, it's not easy to run them down in the Archives - and the Board of Trade details rarely give descriptions of use. There was a flurry of Stuart Registrations between 1914 and 1922, and it takes a lot of time to investigate all of them.
I've looked at the Board's 05 Crystal designs where there are a fair number of Stuart pieces but it doesn't appear that anyone has logged the shape/pattern of these engraved examples.
So afraid for the time being no further forward on the engraved glasses, but like the analogy of monkeys with typewriters knocking out the works of Shakespeare, potentially, given time we might run down the Registration details.
I now have Kew pix for the four Rd. Nos. 681649 to 52 (which includes the op's etched examples of 681652 in this thread) and, as you'd imagine, none of the images shows any form of decoration - just a plain outline shape. However, in view of their design they all appear to be from the Stratford Rings service and in view of the stem shape and size look more to be forms of drinking glasses, but that's just my opinion - again they don't come with descriptions of use.
Stratford Rings is an unmistakable design, and was produced for eons it seems, and it's not possible to say with any certainty when the Gumtree link cocktail glasses - quoted as Rd. 681616 - might have been made - the shape was certainly Registered in March 1921, but Stuart continued to produce cocktail glasses and shakers for a couple of decades after. It doesn't appear that anyone has posted a pic of Rd. 681616 on the 05 Crystal site, yet.
Coming back to Ray's 'cock fighting' engraved pieces, I thought at first that they had red bowls - until I realized he'd put some plonk in them

I appreciate that Bernard had already dated these particular glasses - based possibly on the style of backstamp perhaps - to the 1920's - although have to say that I'm unable to find any book examples of Stuart glasses with air twists like Ray's from that period.
There are, however, some designs from Luxton from the 1950's and early 1960's that did have similarly designed stems plus part acid etched and part engraved decoration (commemoratives I believe). Can anyone point me to book examples of Stuart glasses, with air twists, that would date to before WW II?
Apologies that this is long winded - again.
