Seiko - King Seiko Hi-Beat 'Serviced' - No reserve price - 5626-8000 - Men - 1974

Now available at auction from Second Vintage

This classic King Seiko Hi-Beat is a sought-after reference highly regarded by collectors for its sharp Grammar of Design case and excellent high-beat movement. With an exceptionally clean silver sunburst dial and a well-preserved stainless steel case, this 1974 example highlights the refined aesthetic and mechanical precision that defined Seiko's vintage production.

Brand: Seiko
Model: KS Hi-Beat
Reference Number: 5626-8000
Serial Number: 403103
Movement: Automatic, Caliber 5626B, 25 Jewels, 28,800 bph
Dial: Silver sunburst with applied indices and day-date complication
Case Size: 37mm (excluding the crown)
Case Material: Stainless steel
Production Year: 1974
Condition: Excellent vintage condition. Movement serviced on 16 October 2026. Timegrapher: -6-8s/day, performing remarkably well.

Dial and Hands
The dial features a pristine silver sunburst finish that provides an exceptionally clean and legible visual character. All text and logos are executed with crisp black printing. The applied indices feature black inserts that remain clean and well-aligned, perfectly complementing the sharp day and date window frame. The dauphine hands carry matching black center stripes and display clean surfaces with no visible oxidation or corrosion. A straight and clean sweep seconds hand completes the excellent original condition of the dial and handset.

Case and Crystal
The stainless steel case is well-preserved, retaining its strong original geometry. The sharp lug profiles feature well-defined transitions between the brushed tops and polished flanks. The surfaces show light scratches consistent with careful wear, with no significant dents or deep dings visible. The polished smooth bezel remains in good condition, showing only light hairline scratches consistent with the rest of the case. The watch is fitted with an unsigned knurled crown, featuring knurling that is well-defined and intact. A flat crystal provides an unobstructed view of the dial and is clear with no visible scratches, chips, or crazing.

Movement
Powering the watch is the high-beat 5626B automatic movement. The movement surfaces are clean, showing no obvious oxidation or corrosion, with well-preserved bridges and rotor. The screw heads appear clean and unmarred, and the engravings clearly read SEIKO, 25 JEWELS, and JAPAN 5626B. Recording -6-8s/day on the timegrapher, it is exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The movement was serviced on 16 October 2026.

Strap
The watch is paired with an attractive black leather strap featuring an alligator or crocodile pattern. The reverse side is finished with white contrast stitching. The strap shows light signs of wear and creasing.

Condition
Excellent vintage condition. The movement was serviced on 16 October 2026 and, supported by the recorded timegrapher result, is performing very strongly. The silver sunburst dial is exceptionally clean, with pristine indices and hands. The case retains strong original geometry and sharp lug profiles, showing only light surface scratches consistent with careful wear and no significant dents. The crystal is clear and free of visible scratches.

Dimensions
The case measures 37mm in diameter (excluding the crown).

Remarks
This King Seiko offers a highly desirable combination of a sharp case and an exceptionally clean dial. The presence of the high-beat 5626B movement, performing remarkably well, makes it a superb addition for any dedicated collector of vintage Japanese horology.

History
The King Seiko line represents a peak of Seiko's mid-century manufacturing, celebrated for its sharp Grammar of Design cases and high-quality movements. The caliber 5626 is a 25-jewel automatic movement that operates at a high-beat frequency of 28,800 beats per hour. The updated 5626B variant improved upon the earlier version by replacing the external regulator with a standard one. The 5626-8000 reference is distinguished from its contemporaries by its specific bezel shape and a smaller, lower-profile crown that is traditionally unsigned, a detail preserved on this 1974 example.

Payment and Shipping
Payment must be completed within 1–3 days after purchase.
Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind.
We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination.
Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age.
We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description.
The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use.
If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you.
As with all used watches, water resistance is not guaranteed.
If you have any questions, feel free to contact us after the auction ends.

/ Second Vintage

SKU: SEI-KHX-0006