Here is a spectacular vintage Omega Constellation watch dating to 1961, according to its movement serial number: 18018311. This watch has been professionally serviced, running strong and accurately. The automatic movement is an Omega caliber 561 with 24 jewels. The factory's original finish dial is in excellent condition. The case comprises a solid gold bezel and a gold medallion with gold-capped lugs over solid stainless steel. This model was only produced between 1959 to 1961. The case is in excellent, original, unpolished condition. Brand new case gasket. Original correct signed crown. Newly installed acrylic crystal. The case model is 14393-10 SC and measures 34.5mm across, excluding the crown by 43.2mm lug tip to lug tip. Watch will come with a matching high quality 18mm genuine leather strap. Wrist size in photo is 6 inches.