Available now on auction by Second Vintage A true icon of mid-century horology, the Omega Constellation represents the pinnacle of the brand's precision watchmaking during the golden era of mechanical chronometry. This specific reference 168.004 is celebrated for its elegant hidden crown design, offering a perfectly symmetrical case profile that wears beautifully on the wrist. Featuring a chronometer-certified movement and a striking crosshair dial that has aged with tremendous character, this piece embodies the romance and enduring appeal of vintage watch collecting. Brand: Omega Model: Constellation Reference Number: 168.004 Serial Number: 20360271 Movement: Automatic Caliber 561 Dial: Silver crosshair dial with heavy even stardust patina and applied indices Case Size: 34 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1963 Condition: Good vintage condition with striking stardust patina Dial and Hands The dial is a standout feature of this timepiece, presenting a classic crosshair design that has developed a heavy, even stardust patina across its entire surface. Originally silver, the dial now exhibits a rich, textured speckling that collectors often seek for its unique, organic aging and highly individualized vintage aesthetic. It features applied faceted baton indices with black inserts, complemented by an applied Omega logo, classic script, and the signature Constellation star. The faceted dauphine hands, also featuring black inserts, show age-consistent oxidation that harmonizes perfectly with the dial's aged character. A framed date aperture sits cleanly at the three o'clock position, while the traditional Swiss Made signature rests at the bottom. Case and Crystal The 34mm stainless steel case showcases the distinctive hidden crown architecture of the 168.004 reference, allowing for a seamless, perfectly rounded profile. The case remains in good vintage condition, displaying honest handling marks, superficial scratches, and edge wear consistent with decades of use, while retaining its overall geometric integrity. The original Omega-signed scalloped crown is tucked neatly into the case flank, operating as intended. The screw-down caseback features the iconic Observatory medallion, with the brickwork and stars remaining crisp and well-defined. A domed acrylic crystal protects the dial, presenting clearly with minimal surface wear. Movement Inside beats the highly esteemed Omega Caliber 561, a 24-jewel automatic chronometer movement adjusted to five positions and temperature. The copper-toned movement presents beautifully through the caseback images, displaying the serial number 20360271, which dates production to 1963. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The timegrapher results show an impressive -4 to -6 seconds per day with strong amplitude. Strap The watch is fitted with a period-appropriate black suede leather strap, detailed with contrasting thick cream stitching. The strap adds a rugged yet refined aesthetic that complements the heavily patinated dial perfectly and secures with a standard steel buckle. Condition Good vintage condition with striking stardust patina. The watch shows normal vintage wear, with a well-defined case and a dial that proudly displays its age through a heavy, even speckling. The movement is running exceptionally well, and the overall presentation is highly attractive for a collector who appreciates authentic, unpolished character. Dimensions Case Size: 34 mm (excluding the crown). Remarks The combination of the hidden crown case and the deeply patinated crosshair dial makes this Constellation a highly distinctive example. The excellent mechanical health further elevates its desirability as a wearable and reliable piece of Omega's chronometer history. History Introduced in 1952, the Constellation line was Omega's flagship collection, designed to showcase the brand's absolute mastery of precision chronometry. The Observatory medallion on the caseback pays homage to Omega's numerous victories at the Kew-Teddington and Geneva observatory trials, symbolizing the highest standards of accuracy. The reference 168.004, with its innovative hidden crown, represents a refined evolution in the Constellation family, blending technical excellence with sleek, uninterrupted mid-century design. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and very securely packaged, and shipped with tracking and insurance for your peace of mind. We ship via fast express service, with typical delivery in 1–4 business days (destination dependent). Note that with vintage watches, minor signs of wear, aging, or imperfections may be present and are considered normal for watches of this age. Please review all photos carefully before bidding. We strive to photograph each watch from multiple angles for the most accurate representation. The photos form an important part of the description. If there are any concerns of functionality or defects after delivery, make sure to contact us within 3 days of receiving the watch so we can assist you. As with all vintage watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: OME-OCA-0001