This is a vintage 1965 Omega Seamaster 600 manual winding watch in very fine condition. The caliber 501 manual winding movement sparkles and is accurate. This dial is virtually pristine and original… amazing! The correct winding crown is installed. These watches are very discreet and simple. These movements are a real workhorse, and because it is manual winding, there are fewer moving parts (no rotor) and should last more than a lifetime.