Seiko - Seikomatic Weekdater - No reserve price - 6218-8971 - Men - 1964

Now available at auction from Second Vintage

Presented with a sought-after Seikomatic Weekdater configuration, this 1964 timepiece highlights an exceptionally clean silver sunburst dial. The watch pairs its distinctive separated day-and-date layout with the precision of a high-jewel 6218A automatic movement, housed within well-preserved stainless steel case geometry.

Brand: Seiko
Model: Seikomatic Weekdater
Reference Number: 6218-8971
Serial Number: 4D05435
Movement: 35-jewel automatic caliber 6218A
Dial: Silver sunburst finish with separated day and date windows
Case Size: 37 mm (excluding the crown)
Case Material: Stainless steel
Production Year: 1964
Condition: Excellent vintage condition. Timegrapher: +2+4s/day, performing remarkably well.

Dial and Hands
The exceptionally clean silver sunburst dial presents a beautiful foundation for the applied faceted indices. The surface is well preserved, showing crisp printing and completely free of visible staining or moisture damage. A distinctive feature of this model is the separated calendar layout, displaying the date window at three o'clock and the fully spelled-out day window at six o'clock. The polished dauphine-style hands are well preserved, showing only minor dust or micro-oxidation visible under macro magnification.

Case and Crystal
The stainless steel case displays honest wear, with edges that remain relatively well defined. The brushed finish on the lug tops remains visible, while the polished flanks and thin polished bezel ring exhibit light surface scratches consistent with normal wear. A recessed crown sits neatly at the four o'clock position, with its knurled edge visible in profile. The domed acrylic crystal is clear, showing no major scratches or crazing, and provides an undistorted view of the dial below.

Movement
Inside beats the automatic caliber 6218A, a 35-jewel movement marked with Seiko engravings. The plates and bridges are clean, with no visible corrosion or heavy oxidation, though minor surface scratches are present on the rotor. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The raw timegrapher result is +2+4s/day.

Strap
The watch is fitted with a black leather strap featuring an alligator grain pattern and white contrast stitching. The strap currently shows light wear.

Condition
Excellent vintage condition. The dial is exceptionally clean, completely free of visible staining or moisture damage, and the hands show only microscopic signs of aging. The stainless steel case retains well-defined geometry with visible brushing on the lugs, alongside light surface scratches on the polished flanks and bezel. The domed acrylic crystal is clear. The movement is clean and timegrapher testing demonstrates strong mechanical performance.

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

Remarks
This Seikomatic Weekdater represents a highly desirable configuration for collectors. The combination of its distinctive separated calendar layout, the beautifully preserved silver sunburst dial, and the robust 35-jewel movement makes it an outstanding example of mid-century Japanese watchmaking.

History
Introduced in 1964, the 6218-8971 Seikomatic Weekdater served as the flagship model of Seiko's automatic lineup during the era. The watch is a collector favourite known for its separated calendar layout, featuring a date window at three o'clock and a fully spelled-out day window at six o'clock. It is powered by the 6218 caliber, a 35-jewel automatic movement operating at 18,000 beats per hour. This premium movement was equipped with a hacking mechanism and incorporated a fine adjuster on the balance regulation, reflecting Seiko's commitment to high-quality mechanical watchmaking in the 1960s.

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-MJD-0004