Marie van Goethem
Between 1878 and 1881, Degas drew, painted and sculpted Marie in artworks including "Dancer with Fan", "Dancing Lesson", "Dancer Resting", numerous preparatory sketches, and most famously in "Little Dancer of Fourteen Years". He frequently attended ballet performances at the Paris Opera and often observed classes at the dance school. By posing for Degas, Marie likely earned five to six francs per four-hour sitting.
Erté
"Demoiselle à la balancelle" is one of Erté's first sculptures, if not the first. Made in 1907, at the age of 15 years, during a stay in Paris. This work is less precise than his other sculptures, but still Art Nouveau. Erté considered this so minor and uninteresting that it does not appear in his official biography, but the cartouche on the back indicates 'ERTE PARIS 1907', in a triangle.