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Hi. It looks to me to have a layered 'canopy' with ice pick bubbles through it, and is a design sometimes called an 'Aladdin's Cave'. Perthshire (and others) made some of these, but that said, the treatment of the base and the poor quality glass suggest to me that it is probably from Belgium or the Alsace region, where the design originated.
(also see my images in 'Ysart Harlequin' thread).
Alan