The history of the Etablissements Gallé after 1918, under the management of Paul Perdrizet, is often regarded as the mere industrial exploitation of the simplest of the glassmaking techniques perfected more than a decade earlier by the founder of the company, Emile Gallé. But among the most popular Gallé series from this period, the so-called mold-blown and acid-etched vases and lamps stand out as a major attempt to introduce some changes borrowed from the common glass industry. Recently discovered archives allow us to identify the designers behind this innovation and to explain why it remained both limited in scope and short-lived.