311.33.44.51.04.002Ref

The Speedmaster is an enduring classic in watches. The Speedmaster Moonwatch Co-Axial takes on the classic look of the Speedmaster Professional, yet features a larger case and high-tech automatic movement with co-axial escapement. Reference 311.33.44.51.04.001 has a stainless steel case, white dial and bezel, and a white alligator strap. To our knowledge, this version never went into production.