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Hi m. I recall looking at this when it was first mentioned on GMB in ?2013. I don't believe it is French: the canes may be broadly similar to some French ones, but do not match. However, some of the canes are very like those shown by Peter von Brackel in 'Classic Paperweights from Silesia/Bohemia' pp 31 to 41 , attributed to an unknown glassworks, possibly Dr W E Fuss in Magdeburg, in the late 1830s - early 1840s. So I think it is a fragment of a Silesian item.
Alan