The best date estimate that I can make based on my research is that this is a late 1950s Cissette. The Madame Alexander company introduced Cissette in 1957. This listing includes the doll, earrings, dress, slip, and panty.
Her hair is in very nice condition. She is marked MME ALEXANDER (see photo). Jointed neck, shoulders, hips, and knees. Feet designed for high heels. Dress is marked Madame Alexander "Cissette". The item "VINTAGE 1950s 10 Madame Alexander CISSETTE withEarrings Dress Slip & Panty" is in sale since Monday, July 27, 2020. This item is in the category "Dolls & Bears\Dolls\By Brand, Company, Character\Madame Alexander\Vintage (Pre-1973)\1948-59".The seller is "himmie1999" and is located in Ardmore, Pennsylvania. This item can be shipped to United States.