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Hi. Although there are some well know paperweight makers, thousands of small glass studios around the world have made a few paperweights as tourist trade pieces at some time in the last 50 years - often with no signature. That makes it very difficult to tie the simpler generic abstract designs to particular makers. Whenever we have visited small glass studios whilst on holiday ( in France, New Zealand, Germany, Corsica, England...for example) we have seen some paperweights for sale, even though they were not the main product.
Alan