Omega, Heavy 18k Gold Constellation Ref. 398.0819, circa 1972

A remarkable triumph of 1970s horology, this heavy 18k Gold Omega Constellation (Ref. 398.0819) pairs rare technical innovation with classic high-luxury design. Produced circa 1972, this timepiece showcases a solid 18k yellow gold construction and houses Omega’s famed Caliber 1220 "Megasonic 720 Hz" tuning fork movement—a true collector's centerpiece representing the peak of high-frequency electronic movement development. Key Features & Design 18k Solid Gold Case: Measuring 36 mm, the three-body case features a sharp reeded bezel, solid screw-down case back, and impressive overall weight and presence. Refined Silver Dial: Designed with stark high-contrast contrast, the silver dial features applied gold and black baton hour markers paired with sleek black baton hands for effortless readability. Historic Caliber 1220 Movement: Powered by the rare Megasonic 720 Hz chronometer movement (17 jewels), operating at double the frequency of standard tuning-fork movements for exceptional accuracy and a distinctive smooth sweep. Integrated 18k Gold Link Band: Features its original heavy 18k gold link bracelet fitted with a secure deployant clasp, fitting wrists up to 8 inches. Substantial Gold Weight: Total gross weight of 144.4 grams, giving it a commanding and luxurious feel on the wrist.