Omega Speedmaster 57 331.10.42.51.03.001

Omega Speedmaster 57 Co-Axil Chronograph 331.10.42.51.03.001. Automatic chronograph movement. Si14 silicon balance spring, co-axial calibre 9300. 60 hour power reserve. Steel case, diameter 41.5mm, water resistant to 100 metres. Blue PVD dial with white luminous baton hour markers and tachymetre bezel. Seconds sub-dial at 9 o’clock and a 12-hour and 60-minute chronograph recorder on the sub-dial at 3 o’clock. Date window at the 6 o’clock position. Sapphire crystal case back. Steel bracelet with double folding clasp. Box and papers dated November 2015. Omega service papers April 2022.