Here is a stunning vintage Omega Constellation watch dating to 1966, according to its movement serial number: 23854844. And was given to the owner in 1968. 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 pie pan dial is in excellent condition. The case is made of solid stainless steel and is referred to as the Constellation "dog-leg" case model. It is a Gerard Genta design case. The case is in excellent original unpolished condition. Brand new case gasket. Original signed crown. Original signed acrylic crystal. The case model is 168.005 and measures 34.4mm across, excluding the crown by 42.5mm lug tip to lug tip. Watch will come with a matching high quality 18mm genuine leather strap. Wrist size in photo is 6 inches. The watch original inner & outer box, letter, booklet (left blank), instructional booklet, certificate, used original strap, original buckle, and cushion are included. A spare case back with presentation engraving to the original is also included, however, it does not completely screw into the case. The reference # on the spare back is for the non-date version.