Available now on auction by Second Vintage
This Seiko Lord Matic captures the vibrant and experimental spirit of 1970s Japanese watchmaking, featuring a stunning green gradient dial and a distinctive faceted crystal. As a mid-tier luxury model that sat just below King Seiko in the era's hierarchy, the Lord Matic series offered exceptional finishing and robust automatic movements, making this piece a highly collectible example of Seiko's "Grammar of Design" evolution.
Brand: Seiko
Model: Lord Matic
Reference Number: 5606-7230
Serial Number: 373166
Movement: Automatic Caliber 5606
Dial: Green Gradient Sunburst
Case Size: 36 mm (excluding the crown)
Case Material: Stainless Steel
Production Year: 1973
Condition: Good vintage condition. The watch shows honest signs of age and wear consistent with a piece from this era, particularly on the faceted crystal, while maintaining a strong and attractive presence on the wrist.
Dial and Hands
The highlight of this timepiece is the mesmerizing green sunburst dial which features a gradient effect, darkening towards the edges to create depth and visual interest. The dial is adorned with applied silver block indices and the polished "Seiko" and "LM" logos, all of which remain bright and crisp. A framed day-date window is positioned at 3 o'clock, featuring a desirable Kanji and English day wheel. The hands are polished batons with central inlays, preserved well with no signs of corrosion.
Case and Crystal
The stainless steel case measures 36mm and features the sharp, distinct lines characteristic of Tanaka's design influence, blending polished and brushed surfaces. The case remains in honest vintage condition with visible surface scratches and handling marks typical of its age. The watch retains its original faceted "cut glass" crystal, a signature feature of this specific reference which plays with light dynamically. The crystal shows visible scratches and wear along the faceted edges, which is common for this specific crystal type after five decades of life.
Movement
Powering the watch is the high-grade Seiko Caliber 5606A, a 25-jewel automatic movement known for its reliability and use in higher-end Seiko models of the period. The movement is clean and the rotor swings freely. Timegrapher testing indicates a performance of -44s to -51s per day, which indicates a movement that is operational and running.
Strap
The watch has been fitted with a new black leather strap featuring contrasting white and brown stitching. The strap is supple and complements the darker tones of the gradient dial, offering a comfortable fit for a variety of wrist sizes.
Condition
This timepiece is in good vintage condition. While the case and faceted crystal show visible wear and scratches commensurate with its age and use, the dial remains in excellent preservation, allowing the watch to retain its unique vintage charm.
Dimensions
The case measures 36mm in diameter excluding the crown, offering a classic vintage proportion that slides easily under a cuff while still standing out due to the faceted crystal height and vibrant dial color.
Remarks
This Lord Matic represents a specific era of creativity where Seiko experimented with bold colors and geometric crystal cuts. The combination of the emerald green face and the light-refracting crystal makes this a conversation piece that is distinctly 1970s yet timelessly stylish.
History
Introduced in the late 1960s, the Lord Matic (LM) line was positioned as a high-grade automatic watch, utilizing the 5606 movement which was a base for many King Seiko and Grand Seiko chronometers of the time. The Lord Matic series was pivotal in bringing high-end automatic movements and sophisticated case designs to a broader audience, solidifying Seiko's reputation for quality and innovation during the quartz revolution.
/ Second Vintage
SKU: SEI-SLJ-0153
























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Seiko - Lord Matic "Gradient Green Sunburst" 耀静 – Yōsei – Quiet Shine - No reserve price - 5606-7230 - Men - 1973
Seiko • 1973
Solgt for
285 USD
Solgt den 1. feb. 2026
36 bids88 watching
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