don't even think you were giving us a bum steer Sue - we're (me) quite capable of getting the wrong end of the stick without the slightest help from others

. My scribbling about p-d-v. was simply in case others here might have been vaguely interested in how that process worked. I agree with you that the stoppers here are simply moulded thingies, made in the usual pressed method of construction as per most stoppers.
What is intriguing - and which it seems we are ignorant of - is how Lalique and his contemporaries might have 'coloured' some of the 'high relief' parts of his moulded designs - the 'appearance' of p.d.v. is unlike Lalique's press mouldings.
m - would agree very unlikely these stoppers are made either p.d.v., or cire perdue (lost wax) - both methods were v. high end one-off jobs. Not that I'd know the difference, but the latter method is the unique process, and the mould can be used literally once only, whereas the French guys did manage to come up with a p.d.v. system with a re-usable mould.
I've not the slightest idea if/whether Lalique made p.d.v. pieces - the names associated with that process it seems were generally Almaric Walter (most prolific apparently), Daum, Argy-Rousseau and Decorchemont. When you think of the quantity of pieces turned out by Lalique, it's unlikely the factory could have produced that volume had they been working solely with traditional p.d.v. methods, and my reference source lacks any mention of Lalique making p.d.v., though that may simply be an oversight.
As you say, for cire perdue the casing was plaster, but assume for p.d.v. the casing might be metal, plaster or even clay .............. when you've read the blurb, come back and explain to us please.

As for the AR piece, I'm having trouble understanding this piece as an example of lost wax, but what do I know about French deco art glass from the late '20s
