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I agree that the style is like examples produced in Murano and the Czech Republic for many years, but the canes used for the petals look to me more like modern Chinese ones. If you go to alibaba.com and search for 'Murano Glass Paperweight' or similar you will find thousands of millefiori and other examples on offer, some fairly crude, some very well made. I am not sure where this example comes from.
AlN
Alan