She clearly was inspired by this print by Maurice Milliere, a popular French illustrator of the 1920s and 30s, who gained fame for his "femme-poupees (doll women)," laughing young ladies with lithe limber bodies, smoky eyes, and fluffy curly hair. The print is in fact entitled La Poupee de Milliere, and Milliere did indeed market little poupees of his femme-poupees, chalkware cuties copied from his prints, with a facsimile of his signature on the base.
However, this bisque beauty does not bear Milliere's signature, and, one assumes, his approval. Here she appears in a German catalogue that originally had been attributed to Hertwig and Company. In 2000, the doll auction company Theriault's sold dolls, figurines, and half-dolls from the archives of Hertwig and Company. These included figurines with the "Sp" mark. Later, in The Ladies of Hertwig, Theriault's published reprints of pages said to be from original Hertwig factory catalogues, including this page. Based on this information, I attributed several figurines in my book to Hertwig. However, Marc and Shona Lorrin, in their book, The Half-Doll, Volume 5, reproduced a page from an old catalogue from Limbach Porzellanfabrik showing that the company used model numbers preceded by "Sp" on its figurines. But why did Hertwig have Limbach catalogues and products in its archives? According to the Lorrins, in 1922, Hertwig took a controlling interest in Limbach, which was suffering from financial difficulties. Standing next to her on the catalogue page is her nude sister.
Here is her long lost sibling, although missing her original bisque base. This little nubile nude is unmarked.