Now available at auction from Second Vintage
This classic King Seiko presents a superb opportunity to acquire a beautifully preserved example of Japanese horological design. The watch is defined by its pristine silver sunburst dial and applied KS logo, paired with a remarkably sharp case that retains its distinct brushed and polished surfaces. Powered by the high-beat caliber 5626B automatic movement, this 1973 timepiece remains a sought-after model for vintage enthusiasts who appreciate honest wear alongside strong mechanical performance.
Brand: Seiko
Model: King Seiko
Reference Number: 5626-7111
Serial Number: 312673
Movement: Automatic, caliber 5626B, 25 jewels
Dial: Silver sunburst with applied indices
Case Size: 36mm (excluding the crown)
Case Material: Stainless Steel
Production Year: 1973
Condition: Excellent vintage condition. Timegrapher: +13+18s/day, performing remarkably well.
Dial and Hands
The exceptionally clean and well-preserved dial features a brilliant silver sunburst finish. Crisp black printing displays the Seiko, Automatic, KS, and Hi-Beat signatures alongside the Japan 5626-7110R text. The applied indices and logos remain bright and well-preserved, with no visible spotting or moisture damage. Crisp dauphine style hands with black center stripes feature a clean metallic finish that perfectly matches the dial condition, showing no visible oxidation or corrosion.
Case and Crystal
The stainless steel case displays sharp geometry with distinct transitions between the brushed and polished surfaces. It exhibits honest wear with well-preserved lines, showing light surface scratches consistent with normal use, but no major dents or deep dings are visible. The smooth fixed bezel shows matching light surface scratches. On the side, the watch is fitted with its clearly signed KS crown, which features a knurled edge in good condition. The flat crystal is clear with a beveled edge, presenting no major scratches or chips.
Movement
Inside beats the Seiko caliber 5626B automatic movement, engraved with 25 jewels. The plates and bridges appear clean, while the outer edge of the rotor shows visible spotting and wear. The timegrapher records a rate of +13+18s/day. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece.
Strap
The watch is fitted with a black leather strap featuring white contrast stitching. The strap appears lightly used, offering a comfortable fit while complementing the sharp, classic profile of the timepiece.
Condition
Excellent vintage condition. The dial and hands remain exceptionally clean, completely free from visible spotting or oxidation, presenting a bright and crisp appearance. The stainless steel case and smooth fixed bezel display honest wear with light surface scratches, retaining sharp transitions and well-preserved lines without any major dents or deep dings. The movement plates and bridges appear clean, though spotting and wear are clearly visible on the outer edge of the rotor. Supported by the recorded timegrapher result, the movement is performing very strongly.
Dimensions
The case measures 36mm (excluding the crown).
Remarks
This King Seiko stands out primarily due to its pristine silver sunburst dial and the beautifully preserved, sharp case geometry that highlights its original design language. The combination of the clearly signed KS crown and the highly capable high-beat movement makes this an exceptionally compelling acquisition for any dedicated vintage collector.
History
The 56KS series is highly regarded among collectors for its sophisticated high-beat movement and classic Grammar of Design styling. Produced during a pivotal era for Seiko, these models showcased the brand's dedication to mechanical precision and refined, angular aesthetics. Today, well-preserved examples from this period remain sought-after by enthusiasts who appreciate the technical achievements and enduring visual character of vintage Japanese watchmaking.
/ Second Vintage
SKU: SEI-KXX-0006















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Seiko - King Seiko Hi-Beat - No reserve price - 5626-7111 - Men - 1973
Seiko • 1973
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