Seiko Lord Matic 深界 – Shinkai 5606-7000 (1971)

Offered in this auction by Second Vintage This Seiko Lord Matic represents the golden era of Japanese watchmaking from the early 1970s, combining the sharp "Grammar of Design" case lines with a sophisticated high-beat movement. With its vertically brushed silver dial and classic gold-tone aesthetic, this timepiece serves as a perfect example of why the Lord Matic line remains highly coveted by collectors today. It bridges the gap between the standard Seiko range and the high-end King Seiko models, offering exceptional finishing and a robust automatic movement. Brand: Seiko Model: Lord Matic (LM) Reference Number: 5606-7000 Serial Number: 154975 Movement: Automatic Caliber 5606 Dial: Silver vertically brushed texture Case Size: 36 mm (excluding the crown) Case Material: Gold Plated (SGP) Production Year: 1971 Condition: Good vintage condition. The watch shows honest wear to the gold plating on the high points of the lugs and case edges, while the dial remains remarkably clean and crisp. Timegrapher results show the movement running between -7 and -11s/day, which indicates a healthy movement running within vintage tolerances. Dial and Hands The dial is the highlight of this timepiece, featuring a sophisticated vertically brushed silver texture that mimics the look of silk or linen. It is adorned with applied gold-tone baton indices that catch the light beautifully. The gold-tone hands are sleek and legible. The day-date window is framed in gold at the 3 o'clock position, featuring the classic Kanji and English day wheel. The applied "SEIKO" and "LM" logos are present and sharp, along with the Suwa Seikosha factory symbol at 6 o'clock. Case and Crystal The 36mm case features the distinct Lord Matic silhouette with strong, angular lugs. This is a front-loading "monocoque" style case, accessed through the glass, which was designed to improve water resistance and structural integrity. The case is gold-plated (SGP) and shows visible signs of vintage wear, particularly on the lug tips and sharp edges where the base metal is slightly visible. The stainless steel caseback remains clearly legible with all reference and serial numbers sharp. The crystal is clear and presents well. Movement Powering the watch is the highly regarded Seiko Caliber 5606 automatic movement. This 23-jewel movement was a workhorse of the era, known for its reliability and slim profile. The watch is currently performing well, showing a rate of -7 to -11 seconds per day on the timegrapher, offering reliable vintage performance. Strap The watch is fitted with a new black leather strap featuring contrasting gold-tone stitching. This choice of strap complements the gold case perfectly and adds a sporty yet dressy character to the watch, making it ready for immediate wear. Condition This timepiece is in good vintage condition. While the case shows expected plating wear consistent with its age and use, the dial has been preserved in excellent condition, free from significant spotting or damage. The movement is clean and functioning within acceptable vintage parameters. Dimensions With a case diameter of 36mm, the watch sits comfortably on the wrist, offering a classic mid-century profile that works well for both formal and casual occasions. Remarks The Lord Matic 5606-7000 is a staple in vintage Seiko collecting. finding one with such a clean brushed dial is a treat. Despite the cosmetic wear to the case plating, the watch retains a charming vintage character and offers a significant amount of horological history on the wrist. History Introduced in 1968, the Lord Matic (LM) line was positioned just below the King Seiko and Grand Seiko in the hierarchy, offering high-grade automatic movements and superior case finishing. It was a massive success for Seiko in the 1970s and played a crucial role in establishing the brand's reputation for quality mechanical watches during the quartz revolution. / Second Vintage SKU: SEILDF9PN0000