Antique Solid silver and enamel erotic cigarette case 1920s

A particularly fine antique almost square pillow shaped case with rounded edges showing a very well painted enamel portrait of a smiling pretty young girl with a candle and clutching her nightdress which has suggestively fallen from one shoulder to the front of the hinged lid. This opens with a push button clasp to reveal a gilded interior, the reverse of the case features engraved initials JAM - marked to the inside rim for 935 silver and makers marks E&W - total weight 137grms - overall dimensions 90 x 82 x 10mm - c.1920 Switzerland