Vintage 1965 JAPAN SEIKO SEIKOMATIC WEEKDATER 6218-8970 35Jewels Automatic.

Vintage 1965 JAPAN SEIKO SEIKOMATIC WEEKDATER 6218-8970 35Jewels Automatic.

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

Item description

Movement :

• Pet name : SEIKOMATIC WEEKDATER .
• Caliber number : 6218A,B,C.
• Movement : Automatic.
• Beat rate : 18000.
• Year of manufacture start : 1964's.
• Factory : Suwa.

Externals :

• Serial number : 5237421.
• Dial number : MADE IN JAPAN 6218-8970T.
• Glass : Acrylic.
• Case size : About 37mm.
• Lug width : 19mm.
• Band : New Leather Strap.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set the day of the week : English only.
  Set of the date : The set at one stage pulling the crown.
  Set of the week : Iteration the hour hand at 9:00 to 1:00
• The day difference time of an used watch is about +-1 minute / day.
• For practical, everyday use, it would be advisable to have the movement cleaned and oiled.

Key Features

The Zenith of Mid-60s Executive Automation (1965): In **1965**, a landmark historic year highlighted by post-war economic growth and Japan's grand entrance onto the global technological stage, the **Seiko Seikomatic Weekdater** stood as the ultimate status symbol. Sourced from the prestigious **Suwa Seikosha** factory under reference **6218-8970**, this high-end dress instrument was engineered for the nation's rising corporate leadership class. It represented the absolute pinnacle of pre-Grand Seiko automatic luxury, capturing the intense pride and industrial optimism of the mid-Showa economic miracle.

The Over-Engineered 35-Jewel Caliber 6218 Masterpiece: This legendary watch is powered by the magnificent **35-jewel Caliber 6218**, a premium heavy-duty automatic movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. In **1965**, a **35-jewel specification**—proudly certified by the iconic stylized **""35"" gold badge** on the dial—was an incredible statement of mechanical complexity. Utilizing a lavish array of synthetic rubies to eliminate gear friction and secure the micro-bearings, this caliber served as the direct structural foundation for the first-ever automatic Grand Seiko (62GS).

Architectural ""8970"" Grammar of Design Case Geometry: The reference **6218-8970** is universally celebrated among vintage purists for its muscular, broad-shouldered **cushion-dress proportions**. The solid stainless steel case features exceptionally sharp, thick geometric facets and wide, beautifully tapered lugs finished with zero-distortion mirror polishing. Adhering to strict corporate aesthetic principles, it houses a **completely recessed time-setting crown at 4 o'clock**—visual proof that manual winding was fully obsolete due to the high efficiency of its internal automatic weight system.

Immaculate ""Weekdater"" Layout and Clinical Purity: The dial of the **6218-8970** is a masterclass in mid-century dimensional art, showcasing a radiant silver sunburst canvas. It features a highly advanced, luxurious **separated dual-calendar layout**: a framed date window at 3 o'clock and a distinctively wide, completely independent **horizontal day-of-the-week aperture located symmetrically above 6 o'clock**. Decorated with hand-applied, multifaceted chunky block indices, this balanced layout prioritized instant split-second legibility for high-stakes executive environments.

The Sovereign Pride of the Etched Dolphin Medallion: Manufactured in the milestone mechanical year of **1965**, the 6218-8970 35-jewel variant remains one of the most highly coveted, investment-grade cornerstone references for serious vintage Seiko enthusiasts worldwide. The ultimate hallmark of its premium sporting and engineering pedigree sits on the screw-down case back: a **beautifully crisp, etched Dolphin insignia**, which historically certified its rugged daily durability. It stands as a profound testament to an era when Suwa perfected the luxury automatic daily instrument to an eternal, heirloom standard.

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.
  
  
• To prevent shipping accidents.
  Please monitor the tracking number until the item arrives and if it stagnates, please investigate at your country post office. Also, please confirm the item when you receive the item.
  
  
• About import taxes.
  Taxes such as import duties and VAT are not included in the item price or shipping charges, except for items shipped to the US. When you purchase, you will likely be required to pay these fees in your country.
  
  
• About Payment, Shipping, Return.
  Payment, Shipping, Return are in accordance with eBay's business policies.