Porterglas fra Kastrup GlasværkHeight 18 cm. Beautiful beer glass from Kastrup Glassworks from the end of the 19th century. The glass is mouth blown in fine and clear crystal glass with an etched decoration. It is decorated with small dense sine waves and an open meander border, border a la grecque. The cut on the glass is a guilloche. This is a technique where the glass is covered with wax in which small copper wheels run according to a set pattern. This technique constitutes