The Omega Speedmaster 311.63.42.50.01.001 is a limited edition of 57 pieces introduced in 2007 in celebration of the 50th anniversary of the Omega Speedmaster. Looking deceivingly like a Speedmaster Professional, it features a hand-wound movement with co-axial escapement and column-wheel operated chronograph, and an enamel black dial. Both case and bracelet are done in white gold.
