Vintage 1965 JAPAN SEIKO SEIKOMATIC-R 8305-9010 30Jewels Automatic.

Vintage 1965 JAPAN SEIKO SEIKOMATIC-R 8305-9010 30Jewels Automatic.

Welcome to my auction!
I am Japanese who live in Tokyo.

Item description

Movement :

• Pet name : SEIKOMATIC-R.
• Caliber number : 8305B.
• Movement : Automatic.
• Beat rate : 18000bph.
• Year of manufacture start : 1963's.
• Factory : Suwa.

Externals :

• Serial number : 5609797.
• Dial number : JAPAN 8305-9011T AD.
• Glass : Acrylic.
• Case size : About 37.5mm.
• Lug width : 19mm.
• Band : New Leather Strap.

Condition :

• Used, it runs well.
• Set of the date : The set at one stage pulling the crown.
• 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 Peak of Mid-60s Refined Automatic Luxury (1965): Manufactured in **1965**—a pivotal historical year during Japan's mid-century industrial transformation and horological ascendance—the **Seiko Seikomatic-R** represented Suwa Seikosha's elevated dress line. Sourced under reference **8305-9010**, this high-grade ""R"" (Refined) model was created specifically for corporate executives who sought ultra-clean calendar integration paired with sophisticated high-jewel automatic movement engineering.

The Over-Engineered 30-Jewel Caliber 8305 Automatic Engine: Powering this historic timepiece is the revered **30-jewel Caliber 8305A**, an in-house automatic movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. Equipping a mid-1960s dress watch with a lavish **30-jewel specification** was a major statement of micro-engineering luxury, utilizing synthetic rubies across gear-train pivots to minimize rotor friction while integrating **hacking seconds** and quick-set date operation.

Architectural ""9010"" Classic Dress Case and Recessed Crown Integration: The reference **8305-9010** is globally distinguished among vintage Seiko collectors for its broad, sharp-faceted stainless steel case architecture. Designed with sweeping lug shoulders, zero-distortion mirror-polished bevels, and a signature **recessed crown at 4 o'clock**, the case maintains a smooth, uninterrupted silhouette that sits remarkably flat against the wrist.

Immaculate Date-Only Dial Harmony and High-Jewel Branding: The dial of the **8305-9010** is a study in mid-century visual restraint and high-contrast legibility. Free from day-window clutter, it displays a radiant silver sunburst canvas decorated with **hand-applied, multifaceted rectangular hour indices** and sharp dauphine hands, perfectly balanced by the framed date window at 3 o'clock and the script **""Seikomatic-R 30 Jewels""** typography above 6 o'clock.

The Sovereign Gold Dolphin or Engraved Case Back Heritage: The ultimate hallmark of this 1965 treasure sits proudly on the case back: the iconic **embossed gold or deeply engraved Seiko Dolphin crest**. This emblem historically certified its factory-regulated precision standard and water-resistant case construction, securing the 8305-9010 as an eternal, investment-grade cornerstone reference for serious collectors worldwide.

For more information, please look at the pictures.

Notes

• Before buying.
  The vintage watches we sell are inspected and adjusted so they work fine. However, since it is an vintage watch, Please purchase on the assumption that it will be repaired.
  
  
• To prevent shipping accidents.
  Please monitor the tracking number until the item arrives and if it stagnates, please investigate at your country post office. Also, please confirm the item when you receive the item.
  
  
• About import taxes.
  Taxes such as import duties and VAT are not included in the item price or shipping charges, except for items shipped to the US. When you purchase, you will likely be required to pay these fees in your country.
  
  
• About Payment, Shipping, Return.
  Payment, Shipping, Return are in accordance with eBay's business policies.