Omega Speedmaster Professional Moonwatch SS Black Dial

The Omega Speedmaster Professional Moonwatch reference 3590.50.00 is one of the most compelling late-tritium executions of the classic Moonwatch, produced from approximately 1989 to 1996. Housed in a 42 mm stainless steel case with the familiar asymmetrical lyre-lug profile, it preserves the direct visual lineage of the watches that established the Speedmaster's reputation in manned spaceflight. This reference is fitted with the manually wound caliber 861, the cam-switched chronograph movement that defined the post-1968 Professional era and remains central to the model's collector appeal. The black dial, stepped case architecture, hesalite-style presentation, and tachymeter bezel deliver the restrained, instrument-like character serious Speedmaster buyers continue to seek out. On stainless steel bracelet, the 3590.50.00 offers the full traditional Moonwatch configuration, including the balanced proportions and utilitarian wearability that made the model an enduring benchmark. Collectors particularly value this reference as the immediate predecessor to the later 3570.50, giving it an important transitional place in the lineage while still retaining period-correct details associated with earlier production. It was not issued as a limited edition, nor was it created for a specific country or boutique, which reinforces its standing as a standard-production example of the core Professional Moonwatch. In collector terms, the watch represents an accessible yet historically meaningful entry into pre-modern Speedmaster ownership, with caliber 861 providing both mechanical credibility and longstanding service familiarity. For buyers focused on heritage, originality of specification, and the unmistakable profile of the traditional Speedmaster Professional, the 3590.50.00 remains one of the most honest and enduring references in the Moonwatch family. Like New with Omega box and papers dated 1991.