hello Chris - I remember that we discussed these things some two or three years back, but now can't find the link.
As an artistic invention these things apparently go back a long way - certainly the late C17 is quoted by Felice Mehlman ('The Illustrated Guide To Glass) - originated (probably) in Venice where it was described as '
traforato' (perforated), where the workers were accomplished 'at manipulating highly ductile glass' - other sources also quoted as Liege and southern Spain.
In the U.K. they appeared around the Regency time (c. 1725), and a little later you see them sometimes hanging as small trellis type baskets on epergnes being used for sweetmeats etc., on the table.
They were copied in the C19 by some of the big names in both Europe and the States - some apparently in uranium/vaseline.
Pieces with handles are more likely to be decorative, but could be used for fruit, cake, bread and sweetmeats.
If you have inclusions/seeds or whatever, plus wear, then this might suggest yours has substantial age.
None of which helps you with this one, but might encourage others who may know more to look in.
