The Speedmaster is one of the enduring classics of the wonderful world of watches. The Speedmaster Moonwatch Co-Axial shares its classic looks with the Speedmaster Professional, but uses a larger case and state-of-the-art automatic movement with co-axial escapement. This version (reference 311.63.44.51.04.001) has a Orange-gold case, a white dial and bezel, and a white alligator strap.This version was never put into production as far as we know.