Iiiii think ... a larger version with a kind of lattice type mold (optical)pattern on it, turned out to be Stuart. Bernard said he'd a tazza and had shown it to M . Gulliver (iirc - open to correction on this memory) and had in turn been shown the pattern in the Stuart pattern books.
It's somewhere on the board and I commented on it recently as some items in a museum in the States had been wrongly labelled with S&W I think.
I think ...
So I've always though these were Stuart.
This is all from memory though as haven't gone and looked up the Stuart reference from Bernard - it's annotated in one of my glass reference books somewhere (maybe in Gulliver? Victorian Glass)
Ok, here's the Stuart bowl thread:
https://www.glassmessages.com/index.php/topic,60786.msg342759.html#msg342759Mind you on reading another thread I put on here about my threaded peacock eye Stuart preserves, I commented that I have a little preserve like Keith's and that it was much lighter weight than the threaded Stuart peacock preserve bowl. A different quality somehow. I remember that bowl now, think I might have broken it by accident though.