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Edinburgh International paperweights were imported from Murano - not sure which factory made them. Most of the ones I have seen had decent enough canes, however the concentric circles were less than perfect - bit like the one you show, where they have used uneven sized blue canes which has distorted the set-up a little. So they may be canes from one (good) factory assembled in another less careful one.
I think various retailers have imported cheap Murano and re-badged them, over the years.
Alan