This is one of the most admirable two-tone case Omega Seamaster 600 timepieces, and it's an uncommon version as well as the case is ROSE gold instead of yellow gold-tone. The case model is 135.011. The rose gold plated over solid stainless steel original case is in excellent unpolished condition. Case measures 34.7mm across, excluding the crown by 40mm lug tip to lug tip. Brand new acrylic crystal. Brand new case back gasket. Original signed crown. The factory original dial is in superb condition. Professionally serviced calibre 601 manual wind movement working solid and accurate and has a movement serial number 23228546, which dates this timepiece to 1966. This watch will come with a brand new 18mm high-quality genuine leather strap. The wrist size in the photo is 6 inches.