Vintage 1964 JAPAN SEIKO SEIKOMATIC WEEKDATER 6218-8970 35Jewels Automatic.

Vintage 1964 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 : 4822263.
• Dial number : MADE IN JAPAN 6218-8970T.
• Glass : Acrylic.
• Case size : About 37.1mm.
• Lug width : 19mm.
• Band : Wrist size that can be worn is Up to about 208mm.

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 Sovereign Apex of Early-60s Automatic Flagships (1964): Manufactured in 1964—a momentous historical year defined by the Tokyo Olympics and Japan's global horological debut—the Seiko Seikomatic Weekdater reference 6218-8970 represented Suwa Seikosha's ultimate luxury automatic timepiece prior to the full expansion of Grand Seiko. Positioned at the very top of the Seikomatic hierarchy, it set the early standard for Japanese executive dress watches.
• The Over-Engineered 35-Jewel Caliber 6218 Automatic Heart: Powering this landmark instrument is the magnificent 35-jewel Caliber 6218A, an in-house automatic engine operating at a steady frequency of 18,000 vibrations per hour (vph). Equipping an automatic watch in 1964 with a extravagant 35-jewel specification was a supreme statement of micro-engineering luxury, using extra jewels across critical movement pivots to minimize friction, paired with hacking seconds and Diashock protection.
• Architectural ""8970"" Classic Dress Case and Recessed Crown Profile: Sourced in a solid stainless steel case, the reference 6218-8970 is globally celebrated for its substantial, sweeping lugs with delicate polished facets. Incorporating Suwa's iconic signature recessed crown at 4 o'clock, the case maintains a sleek, completely symmetrical silhouette on the wrist that glides effortlessly under a tailored shirt cuff.
• Iconic Full Day Window and Sunburst Dial Symmetry: The dial of the 6218-8970 is a masterclass in mid-century layout harmony, featuring a radiant silver sunburst canvas set with hand-applied, multifaceted rectangular block indices. It is famously defined by its distinct arched full day-of-the-week window at 12 o'clock balanced by a framed date window at 3 o'clock, proudly signed ""SEIKOMATIC"" and ""35 JEWELS"" in classic Showa-era typography.
• The Sovereign Solid Gold Dolphin Case Back Crest Heritage: The ultimate seal of prestige rests on the case back: the iconic embossed gold Dolphin medallion set into the stainless steel backplate. Certifying its factory-regulated precision and water-resistant construction, the 1964 6218-8970 35-jewel Seikomatic Weekdater stands as an essential, investment-grade cornerstone reference for serious vintage Seiko collectors worldwide.

For more information, please look at the pictures.

Notes

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