Pre-owned Omega Speedmaster Moonwatch Professional ref 310.30.42.50.01.002 (2023) carries forward one of the most established designs in watchmaking. The Speedy earned its place in history during NASA’s space program, worn on all six moon landings, and the overall look has stayed remarkably consistent ever since. This version sticks close to that formula. The 42mm steel case, black step dial, and aluminum bezel with the dot over 90 all reference the fourth-generation Speedmasters used during the Apollo era. It feels familiar right away. This example is outfitted with sapphire crystals on both sides, giving us a clear view of the caliber 3861 inside. It’s a manually wound movement, now upgraded to Master Chronometer standards, combining traditional operation with modern accuracy and anti-magnetic performance. Shop OMEGA Speedmaster Collection