Antique ladies watch

in platinum, oval case 29x15.5 mm. set with antique brilliant cut diamonds alternating with baguette and triangle cut sapphires, silvered dial with Arabic numerals, crown with cabochon sapphire, mechanical movement with manual winding marked Le Coultre - Blancpain, series no. 11275817, original filigree 12kt white gold bracelet with concealed clasp, length 15 cm.