Seiko - LM "Gradient Blue Sunburst" 光輪 (Kōrin) – Halo of Light - No reserve price - 5606-7320 - Men - 1973

Available now on auction by Second Vintage This striking vintage timepiece represents the bold and experimental design language of Seiko in the early 1970s. With its mesmerizing faceted crystal and deep iridescent blue dial, this Lord Matic creates a captivating play of light that changes with every angle of the wrist. It is a quintessential example of the "Disco Era" aesthetic combined with serious horological engineering, making it a highly desirable piece for collectors of Japanese vintage watches who appreciate unique case geometries and vibrant dial executions. Brand: Seiko Model: Lord Matic Reference Number: 5606-7320 Serial Number: 309553 Movement: Automatic Caliber 5606 Dial: Iridescent Blue Case Size: 36 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1973 Condition: Good vintage condition. The watch presents small signs of age and wear. While the dial remains vibrant and attractive. Dial and Hands The dial is the absolute highlight of this timepiece, featuring a rich, deep blue starburst finish that radiates beautifully under the light. It is adorned with raised gold-toned block indices and matching baton hands, creating a luxurious contrast against the blue background. The applied gold "SEIKO" and "LM" logos add depth to the presentation. The view of the dial is dramatically enhanced by the original faceted "Cut Glass" crystal, which splits the light into a prismatic effect. A framed day-date window is positioned at 3 o'clock, featuring a Kanji and English day wheel, emphasizing its Japanese Domestic Market heritage. Case and Crystal The stainless steel case features the sharp, angular lines characteristic of Seiko's grammar of design from this period. The lugs are brushed on top with polished sides, creating a defined architectural look. The case shows surface scratches and wear consistent with a watch from the early 1970s. The faceted mineral crystal, a defining feature of this reference, shows very small scratches and wear along the geometric ridges, which is common for cut glass of this age, yet it retains its distinct visual appeal and structural integrity. Movement Powering the watch is the reliable Seiko Caliber 5606 automatic movement, a 23-jewel mechanism that was a staple of high-grade Seikos of the era. The movement is clean and features the signature "LM" signed rotor. Timegrapher results indicate the watch is running between +45 and +48 seconds per day, which indicates a healthy movement offering reliable vintage performance. Strap The watch is fitted with a deep brown leather strap featuring an alligator-style grain pattern. The rich earth tones of the leather complement the gold accents on the dial and the cool tone of the stainless steel case, providing a sophisticated and comfortable fit for the wrist. Condition This timepiece is in good vintage condition. The case retains its original geometry but bears some small surface marks and scratches from decades of use. The faceted crystal shows noticeable wear and chips along the distinct cut lines, which is to be expected for this specific style of glass. However, the dial itself appears remarkably well-preserved, free from significant staining or aging. The movement is functioning and the quickset features operate as intended. Dimensions With a case diameter of 36 mm, the watch offers a classic vintage proportion that sits elegantly on the wrist. The angular case design and the height of the faceted crystal give it a slightly larger presence than the dimensions suggest, making it suitable for a wide variety of wrist sizes. Remarks The Seiko Lord Matic 5606-7320 is a fantastic representation of 1970s watch design, where experimentation with shape and glass cutting techniques was at its peak. The combination of the deep blue dial and the gold accents makes this a visually stunning dress watch with a funky edge. It is a distinct conversation starter and a wonderful entry point into the world of collectible vintage Seikos. History Introduced in 1968, the Lord Matic (LM) line was positioned just below the King Seiko and Grand Seiko in the brand's hierarchy, offering high-quality automatic movements and sophisticated finishing to the upper-mid-range market. The 5606 movement inside this watch was one of Seiko's most successful calibers, known for its slim profile and integrated day-date mechanism. This specific model, dating to October 1973, captures the transition in style towards the more flamboyant designs that would define the rest of the decade. / Second Vintage SKU: SEI-SLA-0004