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Hi Gulsari. I do not quite know how old the paperweights in this group are, I am sorry to say, because there is no hard evidence. My feeling is that they are 'classic period' ie 1845 - 1860, but that is, frankly, not much more than guesswork. Your piece may be part of the evidence that links them to the mid 19th century...but canes, sulphides, lampwork and so on can sit on the shelf for many years before being used to make a paperweight - there is hard evidence of that. When we visited Saint-Louis a few years ago the 'cane store' room had canes that were probably 100 year old...! That said, I do think the group of weights I referred to - and your piece - are 19th century.
Alan