Art Nouveau stained glass windows with yellow and purple irises on smooth glass signed Blanchon. The iris flowers are acid-etched. The background is checkered. Two lines frame the stained glass window, the yellow ends in a round shape in the upper part, while the sky blue goes into volutes. Claudius Blanchon (1870-1934) is a master glassmaker from Lyon who had his workshop at 89, rue de Bonnel in the heart of the Cité Rambaud in Lyon (3rd). Wooden frame.