Set of 3 antique crystal wine glasses engraved guilloche pantogravure 13.5cm

This set of 3 antique wine glasses is made of crystal decorated with guilloche friezes. The pantogravure decoration is elegant: a guilloché ornament of delicate scrolls. This guilloche technique is widespread in the 19th century and at the very beginning of the 20th century: the crystal was coated with a wax and the decoration is drawn with a needle in pantogravure in wax, then the object is immersed in an acid bath that attacks the crystal bare. In good condition, these lenses measure 13.5 cm high X 5 cm in diameter. I report a shine on a foot and scratches of use. In this guilloché model, the carafe and other glass sizes are also available.