Management Number 0729 (601) #170 This is a ladies' vintage watch from OMEGA, the prestigious Swiss watchmaker. The reference number is Ref. 511.019, fitted with the Cal. 620 movement. It is driven by manual winding (mechanical). The dial color is silver, and the case material is stainless steel. The item is currently running under manual winding. It is a rare antique model from around the 1960s, featuring a charming round case with a three-dimensional Omega (Ω) logo — an exceptionally elegant and feminine design. There are minor scratches and dullness from years of use and aging, which are characteristic of vintage pieces and add to their appeal. Please note that the strap is damaged. Brand: OMEGA Model Number: Ref. 511.019 Movement: Manual winding Working / Non-working: Working Gender: Women's Case Material: Stainless steel This item is pre-owned and may show signs of use such as scratches, wear, and age-related deterioration. Please refer to the photos for the condition. The watch is confirmed to be running at the time of listing; however, only a short and basic functionality check has been performed. Long-term accuracy and continuous operation have not been tested and are not guaranteed. For quartz watches, the battery level is unknown and replacement may be required after delivery. For mechanical watches, daily accuracy, internal condition, and service history are unknown. Water resistance is not guaranteed. Only the items shown in the photos are included. This item is sold as-is. Please bid with full understanding. We will ship via DHL, FedEx, or Japan Post to arrive within 5 days.