Collectible! Circa 1930s Seiko Seikosha Cal 6 3/4 Mini-Seconds, Mechanical Watch (OH)

Make: Seiko
Type: Mechanical
Model: Seikosha Sub-Seconds Dial
Year of Production: Circa 1930s - 1940s
Movement / Case: Caliber 6 3/4
BPH: 18,000
Number of Jewels: NA
Hand and Dial: Painted Arabic Numerals with Sword Hands
Width: 26mm
Lug to Lug Height: 30mm
Thickness: 8.5mm
Lug Width: 9mm
Bracelet / Strap: Hi-Quality Vintage Genuine leather Strap
Pouch / Box: Brand-New EVA Type Zipper Pouch

Prior to the production of their own movement, Seiko used to purchase watch movements from Europe, namely from the Moeris brand.

Here we have a Seikosha mechanical movement built circa 1930s to 1940s with a sub-second hand dial that is separate from the main movement. This watch was produced prior to the formation of the DAINI and SUWA separate factories.

This gorgeous Seikosha, Model 6 3/4 is breathtaking in  so many ways that brought Seiko into the limelight as a serious watchmaking company that can now contend with the Swiss, English, German and American "big boys."

For Seiko Collectors and Vintage fans, this is a Seikosha Cal 6 3/4 in excellent condition as one can see.

This seldom seen vintage Seikosha has a pearl white main dial, painted Arabic Numerals and Sword hands. It underwent a good and thorough cleaning to reveal pure class in well preserved form. The crystal was replaced and is now in mint condition.

The classical designed case with a flip-open case-back was also cleaned via ultrasonic immersion to remove age marks, and miniscule hairline scratches caused by aging were buffed away.

The crown is located at the traditional 3H positions and nicely tucked away to prevent damage or snags. The crown is original and works flawlessly.

The movement was carefully stripped and meticulously cleaned via ultrasonic immersion, oiled, re-assembled and calibrated on 19 April 2024. Hence, it underwent an overhaul and should be able to operate unhindered until the next servicing thereby providing the owner peace of mind.

It is equipped with a 17J Seikosha Cal 6 3/4 constructed from stainless steel that operates at 18,000 BPH. The time-grapher, after hours of calibration, shows excellent readings of -133 seconds every 24 hours and amplitude of 199. It is actually more precise during use than the shown readings. This is a testament to the quality, excellent power reserve, the meticulous care provided over the years, and the painstaking expert calibration.

To the best of our knowledge and expertise when overhauling the timepiece, the watch is 100% original Seiko components from this particular watch. No parts were replaced with aftermarket or modified parts.

The case width and height are approx. 26mm (w/o crown) and 30mm respectively. The lug width is 9mm, and the strap can accommodate wrists up to 18cm; hence, this watch is suitable for men and the women.

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

A hi-quality vintage genuine leather strap is provided as part of the deal.

The pictures provided shows the watch in excellent condition (no dents 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. A brand-new EVA pouch is provided instead.

This one-of-a-kind watch will make a beautiful birthday present for that special someone, and its value will appreciate over time.

This is a stunning circa 1930s Seiko Seikosha Sub-Seconds in near MINT condition with a beautifully preserved vintage dial, movement, stunning case, and well preserved Arabic Numerals and Sword hands; so, be unique and own a watch that is almost impossible to source in such fine condition.