Rosa HOOPER (San Francisco, 1876-1963) Portrait of a Brown Woman in Black Dress and Muff, mid-body on a Green Background. Large oval miniature on ivory*, circa 1930 Signed lower right in red: Hooper Size : 12,2 x 9,3 cm In its oval medallion with gilded metal clasp. Gross weight : 232,1 gr Raised in the Californian high society, Rosa Hooper completed her artistic studies in Dresden with Otto Eckhardt and in Paris with Gabrielle Debillemont-Chardon for the miniature. She was one of the founding members of the California Society of Miniature Painters, where she was awarded a prize in 1929. According to the regulation that came into force on January 19, 2022, the intra-European Union trade of ivory is subject to obtaining a CIC certificate. Re-exportation outside the European Union is prohibited.