I have never seen another example, but I thought this was Sinclaire originally, but I am believing it is Libbey. Super nice hand cut and faceted cobalt blue base with geometric cube knop. Cut and polished pontil. Cut and engraved clear glass bowl. Measures 6 1/8" tall and 2" diameter across the top of the bowl. No markings I can see.
Item ID: 1997-22a
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