Tiffany & Co pocket watch

Patek, Philippe & Cie, Genève, No. 75040, made for Tiffany & Co. Very fine and rare pocket watch. 18K gold, enamel and ruby. Four-body watch, 'bassine', covered with black enamel, gold hinged cuvette. White enamel dial, Roman numerals, outer minute track. Blued steel 'spade' hands, caliber 18hs, 'fausses côtes' decoration, 20 jewels, straight line calibrated lever escapement, cut bimetallic compensation balance with Breguet balance spring, index regulator with the scale on the center bridge. Signed by the retailer on dial, case and movement.
Diam. 30 mm. Inscribed on the cuvette: Louisa Andrews.