Pre-owned Omega Speedmaster “Grey Side of the Moon” ref 311.93.44.51.99.001 (2021) is a fascinating variation of the beloved Moon Watch. Crafted from a single block of grey ceramic, the 44.25mm case gives the watch a sleek, monochromatic aesthetic inspired by the lunar surface itself. The sand-blasted platinum dial adds subtle depth and shimmer, paired with Moonwatch-style hands and a ceramic tachymeter bezel filled with white Super-LumiNova for a clean, modern glow. Powering the watch is the Co-Axial caliber 9300, Omega’s in-house automatic chronograph movement with a handy 60-hour power reserve. Avant-garde yet classic, the “Grey Side of the Moon” captures Omega’s mastery of innovation and design in one striking, space-born chronograph. Shop OMEGA Speedmaster Collection