Hi Nev,
Thank you for the suggestion. No definitely no Gallé signature that I can see, nor can I find any makers mark on it at all.
It also feels different to my Gallé piece, both physically, and stylistically.
I can see where you're coming from though; it could be French - as I mentioned it bears a passing resemblance to Legras Rubis, but: a) No Legras signature either, and b) It's far higher quality work than any other Legras piece I've seen to date.
Whoever made it though, it's a stunning thing!
Thank you for your suggestion,
Stay well,
Adrian