Baccarat, rare set of 6 crystal alcohol glasses engraved with acid in pantogravure 8cm

These beautiful glasses are made of baccarat crystal. These are small glasses with alcohol, perfect for rum, liqueurs, etc... There are 6 of them, this is a rare model: the glasses are ovoid in shape. We recognize this shape of goblet in the gouvieux service engraved with scrolls. The pantogravure decoration is superb: a guilloché ornament of delicate scrolls. This technique is presented at the museum of baccarat: the glass was coated with a wax and the decoration is drawn with a needle in pantogravure in wax, then the glass is immersed in a bath of acid that attacks the crystal bare. The name of the model must be identified. These old glasses are not signed (baccarat will engrave his signature from 1936). In good condition, they measure 5.5 cm X 8 cm in height. I report tiny splinters...