Management Number 0610 0605Y5884 513 #88 A proud representative of SEIKO's 1970s watchmaking heritage, this is a men's wristwatch from the "56 Lord Marvel" line — one of the most celebrated models of that era. It is equipped with the "Cal. 56" automatic movement, a flagship mechanical caliber of SEIKO at the time, combining reliable precision with outstanding durability. This is a historically significant timepiece that continues to run accurately to this day. The dial carries the distinctive character of a vintage piece, paired with highly legible indices and a practical day-date (day and date) display — a timeless design that brings intellectual, classical elegance to the wrist. Whether worn with a business suit or a smart casual look on a day off, this watch adds a refined and distinguished touch to any adult's style. Brand: SEIKO Model Number: 5606-8090 Gender: Men's Movement: Automatic Working / Non-working: Working Serial Number: 533505 Model: Lord Marvel Day-Date Display 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 or FEDEX to arrive within 5 days.