311.30.44.51.04.001Ref

The Speedmaster is one of the enduring classics in horology. The Speedmaster Moonwatch Co-Axial shares its classic design with the Speedmaster Professional but employs a larger case and a modern automatic movement with co-axial escapement. This iteration (reference 311.30.44.51.04.001) has a stainless steel case, a white dial and bezel, and a stainless steel bracelet. To our knowledge, this version never entered production.