Here is a stunning vintage Omega Constellation watch dating to 1961, according to its movement serial number: 18215745. This watch has been professionally serviced, running strong and accurately. The automatic movement is an Omega calibre 551 with 24 jewels. The highly collectible original factory-finish Pie Pan dial is in very good condition, nicely patina and showing visible age spots. The unpolished stainless steel case with gold medallion is in very good condition. This model was only produced between 1959 to 1962. The case is in very good original unpolished condition. Brand new case gasket. Original correct signed crown. Brand new acrylic crystal. The case model is 14381-61 SC and measures 34.6mm across, excluding the crown by 44mm lug tip to lug tip. Watch will come with a matching high quality 18mm genuine leather strap. Wrist size in photo is 6 inches.