this may well be an example of genuine citrine coloured glass - though for my money I don't rate the cutting as "quite basic but effective" - I'd suggest the design is impressive and far more appealing than much of the boring designs found on modern cut glass.

I'm waffling thus just to make the point that much Continental clear glass from the first half of the C20 does have this slightly yellowish tint as a matter of course - as the lead content is probably zero - and the thicker the glass the more noticeable is the tint - so it's always worth considering this as an alternative to the glass being coloured deliberately. I can never remember whether either Potash or Soda glass might also give this sort of colouring.
If this one is flicked, does it have a good lead glass ring LEGSY? Looking at parts of the body, they appear quite clear, though obviously the thickish areas do show yellowish.
Apparently, in times of shortage of manganese, selenium was used as a stop-gap method of decolourizing clear glass - the down side is/was that it tends to impart a honey tint.
I'm not suggesting this isn't coloured deliberately, but Continental glass from the area suggested does often have a slightly straw tint, so worth considering. Just my opinion, but I'm not seeing this as French. Vases do get moved a lot, but the wear indicated IMHO does indicate not made yesterday.
