Offered in this auction by Second Vintage A vibrant example of 1970s Japanese watchmaking, this Seiko LM ref. 5606-5080 embodies the boldness and creativity of Seiko’s golden era. With its distinctive square stainless steel case and mesmerizing green sunburst dial, this timepiece makes an immediate impression and represents an increasingly hard-to-find chapter in vintage Seiko history. Its robust automatic movement, sharp day-date display, and geometric gold accents all reflect the attention to detail that made the LM series a collector’s favorite. Brand: Seiko Model: LM Reference Number: 5606-5080 Serial Number: 2N1508 Movement: Automatic Dial: Green sunburst with gold applied indexes, day-date window at 3 o'clock Case Size: 34 mm (excluding the crown) Case Material: Stainless steel Production Year: 1972 Condition: Great vintage condition, with strong case lines and a vivid dial. Minor signs of wear consistent with age. Timegrapher result: +39/+42s per day, indicating a healthy movement running within vintage tolerances. Dial and Hands The dial dazzles with its deep green metallic sunburst finish, playing beautifully with the light. Gilt baton indexes and gold-toned framed day-date at three o’clock create a rich contrast and underscore the vintage appeal. The original gold hands retain their sharp shape and have developed a warm patina, while the Seiko and LM logos remain crisp and prominent. Case and Crystal The angular square stainless steel case is sharply defined, preserving its brushed finish with only small signs of wear. Case edges and facets remain crisp, a testament to careful wear over the years. The crystal is clean and free from distracting marks, offering an unobstructed view of the captivating dial. Movement Equipped with Seiko's reliable automatic 5606 series movement, this watch delivers performance and durability. The provided timegrapher data (+39/+42 seconds per day) demonstrates the watch is running within vintage tolerances and shows a healthy movement, ready for daily wear or to complement any collection. Strap The watch is paired with a high-quality black leather strap, featuring an elegant grain pattern that complements the case’s design and offers comfortable wear. Condition Overall, this Seiko LM is presented in excellent vintage condition. The case retains its original shape and brushed finish, while the dial remains striking and vibrant. The movement operates reliably, backed by strong timegrapher results. Dimensions Case diameter: 34 mm (excluding the crown) Remarks A rarely seen model, this Seiko LM ref. 5606-5080 is defined by its striking square case and bold green dial—a true standout for fans of Seiko’s unique design heritage. Well-preserved and mechanically sound, it is a compelling opportunity for collectors seeking an iconic Japanese vintage piece with genuine character. History Introduced in the early 1970s, the Seiko LM (Lord Matic) series embodied the innovation and style that propelled Seiko onto the world stage. The 5606-5080’s distinctive case and lush sunburst dial reflect an era of experimentation and excellence, making it an increasingly desirable watch among vintage enthusiasts today. Payment and Shipping Payment must be completed within 1-3 days after purchase. The watch will be securely packaged and shipped with tracking and insurance for your peace of mind. Please review the pictures carefully before bidding. We strive to showcase the watch from multiple angles for an accurate representation. As with all vintage watches, water resistance is not guaranteed. The watch will be delivered in fully functional working condition. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEI1I21A7U000