Vintage Art Glass Paperweight (Signed & Numbered)

This beautiful, early, hand-blown art glass paperweight is in excellent condition and is a lovely quality piece. It resembles an eruption of sorts, with channels of blue coming from a central large bubble and then overflowing down the sides. Although the base is signed as well as numbered, I haven’t been able to trace the maker. It stands 6,5cm high, with a diameter of 7,5cm and weighs 545g.