3022. Audemars, Piguet & Co. A fine 18K gold keyless wind open face split second chronograph pocket watch Audemars, Piguet & Co. 18K (750) yellow gold open-faced pocket chronograph with split-seconds and pendant winding mechanism Date: Circa 1890 Movement: Swiss lever, cut and compensated, bi-metallic balance, swan neck regulation, No.3946 Dial: White enamel, black Arabic numeral hour markers, black outer minute track and 1/5th second divisions, subsidiary dials at 12 and 6 for seconds and 30 minute recording, gilt Louis XV hands, centre split second chronograph hands Case: Polished hinged round, chronograph button through crown, split seconds at 11, No.12622 Signed: Movement Size: 50mm Weight: 116,58g