I have a lithograph of this is one in my living room! Trying to find the painter for ages! " La Primevère" by Alfons Maria Mucha was a Czech Art Nouveau painter and decorative artist known best for his distinct style.
In addition to designing Sarah’s jewels, Mucha of course famously designed posters for many of her performances. this poster of depicts the divine one as Medea, in the production of Médée performed at the Theatre de la Renaissance.