Vintage Watch | King Seiko 5626 Round Lug Case

Vintage King Seiko 5626-8011: Late 56KS, Round-Lug Case, November 1974

King Seiko was never a junior Grand Seiko. It was Seiko’s second flagship — same factories, same fight with Swiss chronometry, a different badge and usually a sharper price. After the hand-wound 44KS and 45KS generations, Suwa put the 56-series automatic into King Seiko: 28,800 bph, hacking, hand-windable, bilingual day-date. That movement family also sits in period Grand Seiko. A 56KS is the automatic King Seiko most people actually wear: thin enough for a cuff, accurate enough to trust, finished to the KS line rather than a Seiko 5.

By 1974 the quartz crisis was already chewing through mechanical production. King Seiko did not stop overnight. The last 56KS references kept the same calibre and started trying new case ideas — screw-backs instead of monobloc unishells, smaller unsigned crowns, no gold KS medallion on many backs, and lug geometry that no longer looked like a 1960s dress watch.

This Reference: King Seiko 5626-8011

King Seiko 5626-8011 is one of those late experiments. The case is compact — about 35 mm across, 41 mm lug-to-lug, 18 mm lugs, roughly 10.5 mm thick — but the lugs are the point. They are rounded and covered: the spring-bar sits in a pocket so the bracelet appears to grow out of the case. On the wrist it reads closer to an integrated-bracelet sports-dress watch than to a classic elongated-lug 56KS 7110. Seiko was testing a shape for a market that wanted steel on steel, not another leather-strap office watch.

This example wears an aftermarket steel bracelet that follows that line. It is not period-correct KS bracelet, and we will say so. What it does is finish the design the case was already hinting at: one continuous steel object from lug to clasp. If you prefer leather, the 18 mm lugs take a Kyoto strap without a fight.

Condition

Exceptional for a late 56KS. The case is clean. The watch is keeping excellent time. November 1974 puts it in the final chapter of King Seiko mechanical production — 8011 and its 8000-series neighbours were catalogued into 1975, then the name went quiet until the modern revival.

Specification:

Maker: Seiko

Model: 5626-8011

Era: 1974 Nov

Case Diameter: 35 mm

Lug to Lug: 41 mm

Lug Width: 18 mm

Case Condition: Unpolished brushed finished case. Late-production stainless, rounded / covered lugs, screw-back case. I will say the watch is close to a NOS condition.

Dial Condition: Silver brushed like dial in good condition. No aging on the dial.