Set of 6 beer glasses verrerie portieux bocks bistrot acid etched 1920-1930

This superb set of 6 antique beer glasses is made of acid-etched glass. They most likely come from the portieux glass and opaline factory: we find similar models in the 1933 catalog - the lydie model for example. Dating from the beginning of the 20th century, these bocks have a short molded stem and an elongated rim decorated with a delicate engraving of climbing flowers: vines or ivy in cracked chemical engraving. These glasses measure 17 cm in height and 7 cm in diameter. In good condition, I note scratches from use.