For sale is my Omega Speedmaster Moonwatch Professional 3861 Sapphire Sandwich, the modern evolution of one of the most historically important chronographs ever made. This version retains the classic 42 mm Moonwatch case, asymmetrical guards, and the iconic three-register layout — but pairs them with Omega’s most advanced manual-wind movement to date. The sapphire front crystal gives the dial incredible clarity with dual AR coating, and the sapphire exhibition casebacklets you see the entire Calibre 3861 in motion — Geneva waves, rhodium plating, bevels, the lateral clutch, and the beautifully compact cam system. It’s a perfect blend of old-school mechanical architecture and modern METAS-level precision. The step dial brings back the dimension of vintage Speedmasters, while the applied Omega logo (unique to sapphire versions) adds an extra layer of refinement. The tachymeter bezel carries the DON (Dot-Over-90) design, nodding to the vintage references but executed with modern aluminum durability. On the wrist, it wears incredibly well thanks to the updated 5-link bracelet, which tapers smoothly and has a very comfortable push-button clasp. This is the most refined bracelet Omega has put on a Speedmaster yet, with tight tolerances and a balanced weight that makes the watch feel composed without being top-heavy. This is the latest version of the bracelet that has micro-adjust. Overall, this watch brings together vintage aesthetics, space-flight heritage, modern chronometric performance, and genuinely beautiful finishing — making it one of the most versatile, collectible, and technically satisfying Speedmasters available. Movement * Omega Co-Axial Master Chronometer Cal. 3861 * Manual-wind, 21,600 vph * 50h power reserve Case & Crystal * 42 mm stainless-steel Moonwatch case * ~13.2 mm thickness * 20 mm lug width * Sapphire front crystal with double AR * Sapphire exhibition caseback * 50m water resistance The watch is in great condition, bought in spring 2025, I was wearing it very sparingly as a part of the collection. Some minor wear marks here and there (marks on the bracelet links where the clasp touch it etc.), but nothing major. Both crystals are clean, sides and lugs are clean as well. Comes as full set with box and papers. Runs at +1 s/day. Price is $6200 USD/$8700 CAD + your label. No trades please. Watch is in Canada Ontario GTA, so Canadian buyers welcome. Payment by PayPal F&F and Wise. Timestamp https://imgur.com/a/LAe3ZUd