A BIRTHDAY WATCH IS A WATCH PRODUCED THE SAME MONTH AND YEAR AS YOUR BIRTHDAY.

Make: Seiko
Type: Automatic
Model: Seikomatic-R
Year of Production: October 1966
Movement: 8305
BPH: 18,000
Number of Jewels: 30
Hand and Dial: 3D Silver Baton Indices with Dauphine Hands
Width: 38.0mm
Lug to Lug Height: 42.2mm
Thickness: 10.4mm
Lug Width: 18mm
Bracelet: Brand New Uber-Quality Genuine Brown Reptile Italian Leather Strap with matching stitching
Pouch / Box: Brand-New EVA Type Zipper Pouch

According to most reliable online sources, Seiko SUWA developed the 83XX series in 1963 - an automatic movement that also incorporated the mechanical winding feature. It also uses certain elements of the 62XX series movements with the intention to create a slimmer (dress) watch.

This April 1965 Seiko 8305-0020, Seikomatic-R, 30 Jewels Automatic timepiece is the predecessor to the 8306 Business-A model. The "R" stands for "Re-worked," hence it is an improved 840 movement, perhaps incorporating certain elements of the 62XX series into this movement.

Originally meant for the Japanese market, this has become a highly sort-after Collectible.

For Seiko Collectors and Vintage fans, this is a Seiko SUWA but without the logo, in stunning condition, hence the Dolphin located on the case-back. The "AD" (Applied Dial) indicates that the indices are elevated and are supposedly pure silver filled what with the material quality and excellent lifespan.

It's original ivory-white sunburst dial, pure silver baton markers, dauphine hands and date window is in mint condition after a thorough clean-up. The crystal was polished and most scratches were removed albeit miniscule scratches do remain.

Its silver case was also given a thorough clean-up and is near mint condition albeit miniscule scratches and age marks that are barely noticeable.

The crown is original and is located at the 3H position and nicely tucked away. The date and hands quickset operates in the traditional manner by uncorking the crown to the first and second levels respectively.

The movement was carefully stripped and meticulously cleaned via ultrasonic immersion, oiled, re-assembled and calibrated on 28 September 2026; hence, it underwent an overhaul and should be able to operate unhindered until the next servicing thereby providing the owner peace of mind.

Equipped with the classic 8305 movement, it has an impressive 30 Jewels that operate at 18,000 BPH. The timing shows approximately 12 seconds deviation daily which is well within the 30 second requirements by brand new modern automatic watch standards.

The case width and height are approximately 38.0mm (w/o crown) and 42.2mm respectively. The lug width is 18mm, and the strap can accommodate wrists up to 19cm; hence, suitable for men and the modern women.

The watch comes with a Brand-New Uber-Quality Genuine Blue Reptile Italian Leather Strap with matching stitching with silver buckle for added class. 

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 pictures provided shows the watch in near mint condition, 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 nice purposeful carrying case or box will be provided instead.

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

Yes, there are many other same / similar models in the market, but none has beautifully aged and as well maintained as what you see here. Hence, this rare watch will make a beautiful birthday present for that special someone born in October 1966, and its value will appreciate over time.

This is a highly sort-after Seiko Seikomatic-R 8305-101AD 30J automatic watch; so, be unique and own an October 1966 Seiko Seikomatic-R Birthday watch that is almost impossible to source in such stunning condition or purchase it for that special someone instead.