3023. M.T. Stauffer. A small 18K gold open face keyless split seconds chronograph Date: Circa 1920 Movement: Nickel lever, cut bi-metallic compensation balance, Breguet overcoil balance spring, adjusted, swan neck regulator Dial: White enamel, black Arabic hour markers, black outer 5th second divisions and red minutes, subsidiary dials at 12 and 6 for seconds and 30 minute recording, blued steel spade hands, centre chronograph hand Case: Polished hinged back and cuvette, No.57883 Signed: Dial & movement Size: 47mm Weight: 65,43g