A watch that echoes the universe it helped explore, the Omega Speedmaster Professional “Moonphase” 3576.50.00 is a sublime tribute to space exploration, enriched with one of horology’s most poetic complications. Designed for the connoisseur who values both legacy and technical finesse, this timepiece represents a unique chapter in the Speedmaster story.

This pre-owned Omega Speedmaster Professional “Moonphase”, reference 3576.50.00, features a 42mm stainless steel case and the hallmark black dial that defines the Moonwatch lineage. What sets this model apart is the moonphase and date subdial—a celestial addition that enhances the iconic chronograph design with artistic depth. The luminous markers and hands ensure excellent legibility, while the Hesalite crystal maintains the vintage look that collectors admire.

Beating at its heart is the Omega Calibre 1866, a manual-wind movement based on the legendary 1861 but upgraded to include the moonphase function. Known for its durability and precision, this calibre solidifies the watch’s standing as both a reliable timekeeper and a mechanical marvel. The stainless steel bracelet adds rugged elegance, making it equally suitable for daily wear or rotation within a refined collection.

Professionally inspected and authentication certified, this pre-owned Speedmaster Moonphase is in good condition, offering excellent value for established collectors and heritage-focused buyers alike. It blends the romance of space history with the prestige of Swiss mechanical mastery—an investment in legacy, design, and storytelling that transcends generations.