Here is an elegant vintage Omega Constellation watch dating to 1966 according to its movement serial number: 23907714. This watch has been professionally serviced running strong and accurately. The automatic movement is an Omega caliber 561 with 24 jewels. The factory original finish pie pan dial is in splendid condition. The case is made of solid gold bezel and gold medallion over gold capped lugs over stainless steel. Case design is refer to as the Constellation "Round" case model. Case is in great original unpolished condition. Brand new case gasket. Original signed crown. Clean original signed acrylic crystal. Case model is 168.010 and measures 35mm across excluding the crown by 40mm lug tip to lug tip. Watch will come with a new 20mm genuine leather strap. Wrist size in photo is 6 inches.