Paul NICOLAS (1875-1952). Tapered vase in acid-etched multi-layered glass, engraved with irises in brown tones on a yellow ground (scratches from use). Signed "D'argental" with the Lorraine cross. Circa 1920-1930. Height Height : 30 cm Note: a pupil of Emile Gallé and founder of his own workshop in 1919, the use of his pseudonym "D'argental" refers to his place of production, in Münzthal in Moselle, known as the Silver Valley.