Early glass with conical cup featuring 15 vertical facets divided by two transverse bands, with further grinding to the base and two facet-cut knops on the stem. Potsdam, 1700. Attributed by Roesdahl to the workshop's first cutter Martin Winter (1680-1702). Provenance: Harald Roesdahl (1912-1994). Physician and collector of glass and author of several books on glass. Exhibited at Museet Sønderborg Slot, 1992. Cat. 16. Shows signs of age and use.