43. Y. G. Dillon & Son. A fine 14K gold open face split second keyless wind chronograph pocket watch Y. G. Dillon & Son. Beau chronographe de poche à cadran ouvert en or jaune 14K (585) avec fonction rattrapante et remontoir au pendant Date: Circa 1920 Movement: Nickel full plate, Swiss lever, cut and compensated bi-metallic balance wheel, adjusted, No.120790 Dial: White, black Arabic numeral hour markers, black outer 1/5th second divisions, subsidiary dials at 12 and 6 for running seconds and 30 minute recording, blued steel spade hands, centre chronograph and split second hands Case: Polished hinged round with very fine reticulation back, 14K rose gold inner cuvette stamped A.W.C.CO No.177251, chronograph pusher to pendant, split second button to band at 11 Signed: Dial Size: 49mm Weight: 108,98g