This is one of the nicest stainless steel case Omega Seamaster 600 timepieces, and it's an uncommon model. It's a transitional Seamaster 600 with the extra Genève print on the dial. The case model is 136.011, which is a Seamaster 600 case model initially; however, at the very end of the 1960s, it gets replaced with just the word Genève. The solid stainless steel original case is in very good unpolished condition. Case measures 34.4mm across, excluding the crown by 39.5mm lug tip to lug tip. Original signed acrylic crystal in great condition. Brand new case back gasket. Original signed crown. The factory original dial is in superb condition. Professionally serviced manual wind movement working solid and accurate. The movement is an Omega caliber 613 with serial number 25118074, dating this timepiece 1967. The calendar has quick set feature. This watch will come with a brand new 18mm high-quality genuine leather strap. The wrist size in the photo is 6 inches.