Birthday Watch! March 1964 Seiko 6206-8990 Seikomatic Weekdater SUWA 26J Automatic Watch

A BIRTHDAY WATCH IS A WATCH THAT WAS PRODUCED THE SAME MONTH AND YEAR AS YOUR BIRTH MONTH AND YEAR

Make: Seiko
Type: Automatic
Model: Seikomatic Weekdater
Year of Production: March 1964
Movement: 6206
BPH: 18,000
Number of Jewels: 26
Hand and Dial: 3D Baton Silver Markers with Dauphine Hands
Width: 38mm
Lug to Lug Height: 44mm
Thickness: 11mm
Lug Width: 19mm
Bracelet: Brand-New Hi-Quality Two Tone Genuine Leather Strap With Silver Buckle
Pouch / Box: Brand-New EVA Type Zipper Pouch

The Seiko 6206 movement made its debut in 1963. This movement was an improved version of the Caliber 400 (later 410) movement. In between these 2 movements were the 6201 and 6220. The 6201 was used in the first Seiko 5 Seikomatic but it was the 6206 that laid the groundwork for the 62xx series that brought forth the Grand Seiko to the world.

The 6206 movement is found in Seikomatic's and Weekdater's, and is highly sort after because it is not only a thing of beauty but its components were cannibalised for many more expensive watches, thereby this particular 6206-8990 is highly sort after due to its scarcity.

For Seiko Collectors and Vintage fans, THIS IS A Seiko (pre-logo) SUWA Seikosha AD timepiece in very good condition, hence the Cool Spinner Logo. The dolphin is not used on this watch because this watch was meant to target the executive and not sports person.

This extremely rare Seiko Seikomatic Two Window is a sight to behold! It's original milk white Dial has begun to discolour gracefully and has taken on a buttercream hue at certain angles that enhances its look! Patina (Wabi-Sabi: The Perfect Imperfections / Imperfect Perfections) has made a subtle entrance at the bulls-eye of the dial which is rather unique and seldom seen on vintage watches. The Chapter Ring remains clean, so too the silver hands after a good clean-up. The silver baton indices and date window have oxidised but marries well with the dial to create a subtle vintage effect that is pleasing to the eye.

The timeless masculine cylindrical shaped silver case was buffed as best as possible; however, there are some hairline scratches present. The glass is original and was given a good rub-down however, hairline scratches are still present.

The crown is located at the traditional 4H position and is nicely tucked away to prevent damage or snags yet easily accessible. The date and time quickset is via the traditional method of uncorking the crown to the first and second level for date and time adjustment respectively. The day quickset is via turning the hands backwards and forwards past midnight. Another unique feature is that the day is only in English.

Its movement was carefully stripped, meticulously cleaned, oiled, re-assembled and calibrated on 26 September 2025; hence it underwent a full servicing and should be able to operate unhindered until the next servicing thereby providing the owner peace of mind.

Equipped with the well revered 6206 movement, it has 26 Jewels that operate at 18,000 BPH. The time-grapher shows excellent readings of -2 seconds with amplitude of 223! Such readings are truly impressive even by brand new modern automatic watch standards whereby the accepted tolerance is -20- to +40 seconds a day! This is a testament to the quality, excellent power reserve, the meticulous care provided over the years, and of course the painstaking calibration conducted.

The case width and height are approximately 38mm (w/o crown) and 44mm respectively. The lug width is 19mm and the strap length is 21cm; hence, this watch is suitable for men and the modern women.

A beautifully crafted brand new hi-quality two-toned hand-stitched green/black genuine leather strap with matching green stitching is provided to enhance the colour of the case and dial.

Due to its age, this timepiece has not been water-resistant tested.

The pictures provided shows the watch in pristine condition (no dents, dings and major scratches), and the movement within squeaky clean and well maintained. It has also been demagnetised to improve parts reliability, minimise wear + tear, and improve accuracy. The only drawback is the lack of documentation and original box. An aftermarket box or purposeful EVA pouch will be provided instead.

Seldom can one find a vintage watch that offers this and more. Yes, there are many other same / similar models in the market, BUT none are as well-kept and maintained as what you see here, and with an attractive price to boot. So, it is a no-brainer that this one-of-a-kind watch will make an extremely beautiful birthday present for that special someone born in March 1964! Another no-brainer is the fact that the value of this watch will appreciate over time.

Bear in mind that this watch has seen many of the previous owners’ ups and downs in life, and should be cherished and well taken care of for the next generation to savour such engineering beauty.

This is a truly magnificent March 1964 Seiko 5 Seikomatic SUWA Twin Window watch in stunning condition with a beautifully preserved vintage dial, indices, hands, movement and case; so, be unique and wear a timepiece that is almost impossible to source.

This is a must-have for the Seiko die-hard fan, or any vintage watch fan for that matter!