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De fineste genstande bragt til dig af {name}

Erwin Dekker

Seiko’s LM “Gradient Blue Sunburst” 5606-7231 is a masterclass in late 1970s Japanese design, and this example stands out for its superb preserved condition and visually arresting details. The deep blue dial radiates with a true dégradé effect, flawlessly shifting from an electric azure at the center to a midnight navy toward the perimeter. A particular highlight is the original Seiko facet-cut hardlex glass, which dramatically refracts light, creating a kaleidoscopic play that amplifies the dial’s gradient and throws faceted highlights across the applied indices. All original luminous hands and markers are paired with a crisp framed day-date—hinting at both everyday utility and subtle luxury. The case is sharp and unpolished, preserving its original brushed and polished surfaces, and is paired with an original Seiko bracelet fitting up to an 18cm wrist. This Linear Movement classic is a rare opportunity to acquire a statement piece for both collectors and enthusiasts seeking the best of Seiko’s vintage era.

Brand: Seiko
Model: LM "Gradient Blue Sunburst"
Reference Number: 5606-7231
Serial Number: 4N0653
Movement: Seiko 5606 automatic, 23 jewels, day-date quickset
Dial: Deep gradient sunburst blue, applied indices, framed day-date at 3 o’clock, LM and 23 JEWELS text
Case Size: 36mm (excluding the crown)
Case Material: Stainless steel
Production Year: November 1974
Condition: Excellent vintage condition; running and keeping time within vintage tolerances

Dial and Hands
The dial is a stunning blue gradient with a sunburst finish, transitioning from light in the center to deep blue at the edge. All applied indices are crisp, and the original silver hands are exceptionally well-preserved. The luminous plots and handset retain their factory tone, and the printing remains clear and blemish-free.

Case and Crystal
The stainless steel case features both fine brushing along the top surfaces and polished chamfers. The original Seiko facet-cut hardlex crystal displays dramatic light interplay, enhancing the dial’s color shifts and giving the watch a sophisticated visual depth. The case presents sharp original lines, with no signs of overpolishing and only the lightest handling marks, preserving its vintage integrity.

Movement
Powered by the renowned Seiko 5606 automatic movement, this LM operates at 21,600 bph with a quickset day-date complication. The movement is clean, and the watch is currently running and keeping time within vintage Seiko expectations.

Strap
The watch is fitted with its original Seiko stainless steel bracelet, comfortably fitting wrists up to 18cm.

Condition
Overall, the watch remains in excellent vintage condition, with a spectacular dial, sharp unpolished case, near-perfect glass, and healthy movement. Minor signs of age are present on the bracelet, consistent with careful wear.

Dimensions
Case diameter: 36mm (excluding the crown)
Lug-to-lug: 41mm
Thickness: 12mm
Lug width: 18mm
Bracelet fits wrists up to 18cm

Remarks
A rare opportunity to acquire a Seiko LM 5606-7231 in such remarkable, collector-grade condition—highlighted by its captivating blue gradient dial and signature facet-cut glass, both of which elevate this model into the upper echelons of 1970s Seiko design.

History
The Seiko LM (Lord Matic) series was produced in the 1970s to showcase Seiko’s expertise in mid-tier automatic movements and modern design language. The 5606-7231 is celebrated not only for its technical reliability, but also for its avant-garde aesthetics—most notably its faceted mineral glass, which was a Seiko hallmark during this era. Today, these watches are sought after by collectors for their blend of technical ingenuity and period-correct Japanese style.

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. I 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 me after the auction ends.

/ Vintage Watches DK

Automatisk - Rustfrit stål

Seiko - LM "Gradient Blue Sunburst" - Ingen mindstepris - 5606-7231 - Mænd - 1974

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Seiko - LM "Gradient Blue Sunburst" - Ingen mindstepris - 5606-7231 - Mænd - 1974

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