Seiko LM “Gradient Green 5606-7360 (1975)

Now available at auction from Second Vintage Presented here is a superb Seiko LM featuring the highly sought-after “Gradient Green Sunburst” dial and dazzling facet-cut crystal, a true statement piece from the golden era of Seiko design. Reference 5606-7360 with serial number 591456, this exceptional example boasts remarkable originality and condition, combining vivid retro flair with authentic 1970s craftsmanship. The bold, metallic green dial shifts beautifully in the light, while the striking indices and classic day-date display complete an unmistakably vintage profile. For collectors and style connoisseurs alike, this is a rare opportunity to add a standout Seiko to your collection. Brand: Seiko Model: LM “Gradient Green Sunburst” Reference Number: 5606-7360 Serial Number: 591456 Movement: Seiko automatic (Caliber 5606) Dial: Gradient green sunburst with applied indices and day-date at 3 o’clock Case Size: 37 mm (excluding the crown) Case Material: Stainless steel Production Year: 1975 Condition: Near-mint vintage condition with minimal wear. Timegrapher result: -23 to -27 s/day, indicating a healthy movement running within vintage tolerances. Dial and Hands The dial is a captivating gradient green sunburst, exhibiting radiant color play and depth under various angles of light. Crisp, faceted hour markers and polished hands add dimension, with original luminous accents on both showing only light, even aging. The day-date complication, framed in silver with red and black text, remains sharp and legible. All text and logos are untouched and vivid, underscoring the originality of this dial. Case and Crystal The 37 mm stainless steel case retains defined lines and brushed finishing, evoking the era’s bold geometric designs. Surface wear is exceptionally minimal, with unpolished edges and clean contours. The facet-cut crystal serves as a visual highlight, amplifying the dial’s dynamic styling. The crystal is bright and clear, with only the faintest evidence of use under magnification. Movement Inside beats Seiko’s reliable automatic caliber 5606, famed for its robust construction and smooth operation. Recent timegrapher results show -23 to -27 seconds per day, confirming dependable vintage performance. Strap The watch is fitted with its original stainless steel bracelet, maintaining excellent tension with only minor stretch. The finish is clean and consistent throughout, with a secure clasp and sizing to fit wrists up to 17.5 cm. Condition This Seiko LM is in outstanding overall condition and stands as a testament to careful ownership. The case and bracelet exhibit only minor, honest signs of wear, the dial and hands are superbly preserved, and the crystal is brilliant. All functions operate correctly. This is a collector-grade example seldom seen on the market. Dimensions Case diameter: 37 mm (excluding crown) Wrist size fit: up to 17.5 cm Remarks A rare opportunity to acquire a Seiko LM in this condition, combining an eye-catching green sunburst dial, dynamic crystal, and remarkable preservation. It will appeal to collectors and anyone seeking a truly distinctive vintage Seiko. History The Seiko Lord Matic series was a hallmark of 1970s Japanese watchmaking innovation, offering advanced automatic movements and bold aesthetic experimentation. This reference, with its unique dial and crystal combination, exemplifies the creative spirit and enduring appeal of Seiko’s golden age, making it a prized choice for vintage enthusiasts and style aficionados alike. / Second Vintage SKU: SEI1VB95TX000