Hi flying free
Sorry for having answered before. I'm only seeing your posts now.
Since I had the discussion with Antwerp1954 I learnt some things. The most important thing is that the Zoude Catalogue is probably a fake by Raymond Chambon (1922-1976), who was unmasked as a forger by Janette Lefrancq (Annales du 17e Congrès de l'Association Internationale pour l'Histoire du Verre (2009), pp. 339 - 343). Doubts about the authenticity of the Catalogue were already raised by Watts and Tait (Journal of Glass Studies (2007), pp. 153 - 165). This is a very inconvenient truth, because some of Chambon's "findings" were so spectacular that they have been eagerly adopted in many books about historic glass and are still believed valid by many today.
Openwork baskets were featured in the Catalogue, but their production in Namur is also attested by other, contemporary sources, including in the early period 1755-1762. From my experience there are indeed two types of baskets:
1. The ones with pinched, U-shaped knit in bright colourless glass which seems to contain (some) lead. These have a thick moulded base. Because they also have some applications under the moulded base, they have pontil marks on either sides of the base.
2. The less carefully executed ones with V-shaped knit with a yellow-greyish tinge. These contain no lead and have a thin base with pontil mark only at the bottom side.
If you ask me,
https://commons.wikimedia.org/wiki/File:Corbeille_et_plateau_(Verrerie_Nizet,_Li%C3%A8ge,_debut_18e_si%C3%A8cle),_Grand_Curtius,_Li%C3%A8ge.JPG is a set of non-matching items of both types, of which the attribution "early 18th century" is very uncertain.
At this moment we cannot assign either of both types to Liège or Namur. On the one hand, Zoude in Namur is known to have produced ordinary greenish and "white" glass besides his lead glass. On the other hand, it is also possible that Nizet in Liège started using full lead glass a bit later than Zoude in Namur.
Either the U-type was a more evolved version of the V-type, or the U-type was a more luxurious version of the V-type.