80. Leroy & Fils. An 18K gold open face key wind jumping hour pocket watch Leroy & Fils. Montre de gousset à cadran ouvert en or jaune 18K (750) heures sautantes et remontoir à clé Date: Circa 1840 Movement: Gilt full plate, cylinder escapement Dial: Tarnished grey textured, jumping hour aperture at 12, black outer minute divisions, subsidiary dial at 6 for running seconds, blued steel hand Case: Polished round, metal cuvette, No.16449 Signed: Cuvette Size: 53mm Weight: 83,43g