Serviced Vintage 1970 JAPAN KING SEIKO CALENDAR 4502-7010 25J Hand-winding.

Serviced Vintage 1970 JAPAN KING SEIKO CALENDAR 4502-7010 25Jewels Hand-winding.

Welcome to my auction!
I am Japanese who live in Tokyo.

Item description

Movement :

• Pet name : 45 KING SEIKO CALENDAR .
• Caliber number : 4502A.
• Movement : Hand-winding.
• Beat rate : 36000bph.
• Year of manufacture start : 1969's.
• Factory : Kameido.

Externals :

• Serial number : 0N1277.
• Dial number : JAPAN 4502-7020T.
• Glass : Crystal.
• Case size : About 37.1mm.
• Lug width : 18mm.
• Band : New Leather Strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set of the date : The set at one stage pulling the crown.
• The day difference time of an used watch is about +-1 minute / day.
• Overhaul service in October 2026.
  The movement has been cleaned and oiled, so it works fine.

Key Features

• The Sovereign Peak of 1970 High-Beat Manual Precision (1970): Manufactured in 1970—a landmark historical year defined by Osaka Expo '70 and Japan's peak post-war industrial supremacy—the King Seiko Calendar reference 4502-7010 represented Daini Seikosha's definitive manual-wind flagship. Engineered in Kameido as a direct mechanical rival to Grand Seiko, this reference delivered absolute high-beat accuracy wrapped in uncompromising executive luxury.
• The Legendary Ultra High-Beat 25-Jewel Caliber 4502 Engine: Powering this historic timepiece is the celebrated 25-jewel Caliber 4502A, an in-house manual-wind movement operating at a blistering high-beat frequency of 36,000 vibrations per hour (10 beats per second). Revered by horological purists as one of the finest manual-wind calibers ever produced by Seiko, it features hacking seconds, instantaneous date change, and a lavish 25-jewel specification ensuring exceptional rate stability.
• Architectural ""7010"" Grammar of Design Case Geometry: The reference 4502-7010 is globally distinguished among vintage collectors for its strict execution of Taro Tanaka's ""Grammar of Design"" rules. Executed in solid stainless steel, the case features razor-sharp angular facets, bold sweeping lugs, and mirror-polished Zaratsu planes with zero visual distortion, allowing the low-profile dress watch to sit perfectly flush against the wrist.
• Immaculate Dial Symmetry and Daini Lightning Bolt Emblem: The dial of the 4502-7010 displays clinical mid-century visual restraint, featuring a brilliant silver sunburst canvas decorated with hand-applied, multifaceted hour indices and sharp dauphine hands. Symmetrically framed at 3 o'clock is the quick-set date window, proudly offset by the applied metal ""KS"" logo, ""HI-BEAT"" designation, and Daini's iconic lightning bolt symbol above 6 o'clock.
• The Sovereign Gold ""KS"" Case Back Medallion Heritage: The ultimate hallmark of this 1970 vintage treasure sits embedded on the case back: the iconic solid gold ""KS"" medallion. Certifying its top-tier factory regulation and high-grade movement status, the 4502-7010 King Seiko remains an indispensable, highly collectible cornerstone reference representing the absolute zenith of 10-beat Japanese mechanical watchmaking.

For more information, please look at the pictures.

Notes

• Before buying.
  The vintage watches we sell are inspected and adjusted so they work fine. However, since it is an vintage watch, Please purchase on the assumption that it will be repaired.
  
  
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