This distinguished Omega Speedmaster Moonphase Co-Axial Master Chronometer, reference number 304.23.44.52.06.001, is a pre-owned automatic watch in very good condition, showing only minor, intangible signs of wear. It boasts a striking 44.2mm case crafted from a combination of gold and steel, paired with an elegant grey leather bracelet. The captivating grey dial features no numerals, and the watch is protected by a sapphire crystal, offering 10 ATM water resistance. Powered by the Omega Caliber 9904 movement with a 60-hour power reserve, this timepiece comes complete with its original box and papers. Located in Geneva, Switzerland, it is available for a negotiable price of CHF 10,300 (approximately $12,816) and will be procured upon purchase.