Description: Omega Speedmaster ’57 Pre-owned Omega Speedmaster ’57 ref 331.90.42.51.04.001 (2013 – 2021) titanium model is a particularly collection-worthy edition of the Speedmaster. The ’57 model pays homage to the Moon Watch’s past with retro hands and a fascinating bi-compax dial. At the same time, ref. 331.90.42.51.04.001 is a modern Speedy, equipped with an anti-reflective and scratch-resistant sapphire crystal over the dial, grade 5 titanium, and a Co-Axial