Seiko LM 5606-7360 (1974)

Presented for auction by Second Vintage An exceptional example of Seiko’s refined 1970s design ethos, this Seiko LM ref. 5606-7360 impresses with a rare gradient green sunburst dial and a remarkably sharp case. Preserved in near-mint condition and featuring its original stainless steel bracelet, this sought-after vintage Seiko stands out for its vivid dial color, crisp case lines, and enduring build quality—a rare find for both collectors and daily wearers. Brand: Seiko Model: LM Reference Number: 5606-7360 Serial Number: 485107 Movement: Automatic, Seiko caliber 5606 Dial: Gradient green sunburst with applied indices and day-date window Case Size: 37 mm (excluding the crown) Case Material: Stainless steel Production Year: 1974 Condition: Near-mint vintage condition with only small signs of wear. Timegrapher tested at +29 to +33 seconds per day, indicating healthy movement and reliable vintage performance. Dial and Hands The dial features a striking gradient green sunburst effect, transitioning from vivid emerald at the center to deeper forest tones at the edges, creating dynamic visual interest in changing light. All original, the applied indices remain sharply faceted and the silver-tone hands are bright, with only minimal patina visible on the lume plots. The day-date complication at three o’clock is crisp and fully functional, and all original dial text is clean and well defined. Case and Crystal The 37 mm stainless steel case is exceptionally well preserved, with crisp edges and well-defined brushing across the top and flanks. The bold case architecture remains unpolished and free from major abrasions or dings, maintaining its vintage character. The flat hardlex crystal is clear and unmarred, providing an unobstructed view of the vibrant dial. Movement Fitted with Seiko’s trusted automatic caliber 5606, this example is running at +29 to +33 seconds per day on the timegrapher, demonstrating reliable, healthy operation that's well within acceptable vintage tolerances. Strap The original Seiko-signed stainless steel bracelet is included and fits wrists up to approximately 17.5 cm. The bracelet shows only light wear and minimal stretching, with a secure clasp and all links intact for comfortable everyday wear. Condition Overall, this watch is preserved in near-mint vintage condition, with the case lines, dial, and bracelet all showing exceptional care and little evidence of use. The dial is immaculate; the case shows only negligible surface wear; and the bracelet is tight and clean. Running performance is strong and the watch is ready to wear or add to any collection. Dimensions Case diameter: 37 mm (excluding the crown) Wrist size: Fits up to 17.5 cm Remarks Finding a Seiko LM in this colorway and such outstanding condition is increasingly rare. The vibrant green dial, sharp case lines, and original bracelet make this an exceptional example for collectors and enthusiasts seeking vintage Seiko at its best. History Introduced in the 1970s, the Seiko LM (Lord Matic) series represented Seiko’s blend of advanced automatic technology and modern styling. The 5606-7360 stands out for its unique case geometry and eye-catching green sunburst dial, capturing the innovation and style of an era when Seiko was defining the global standard for accessible, high-quality mechanical watches. / Second Vintage SKU: SEI-SLX-0001