Vintage 1963 JAPAN SEIKO SEIKOMATIC SELF-DATA J13059 24Jewels Automatic.

Vintage 1963 JAPAN SEIKO SEIKOMATIC SELF-DATA J13059 24Jewels Automatic.

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

Item description

Movement :

• Pet name : SEIKOMATIC SELF-DATA .
• Caliber number : 394.
• Movement : Automatic.
• Beat rate : 18000bph.
• Year of manufacture start : 1962's.
• Factory : Suwa.

Externals :

• Serial number : 3112609.
• Dial number : JAPAN.
• Glass : Acrylic.
• Case size : About 37.08mm.
• Lug width : 18mm.
• Band : New leather strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  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 Pioneer of Early-60s Date Automatic Luxury (1963): Manufactured in **1963**—a pivotal historical year preceding the 1964 Tokyo Olympics that marked Seiko's global ascendancy—the **Seikomatic Self-Data** reference **J13059** represented Suwa Seikosha's early premier automatic dress watch with integrated calendar functionality. Predating the standardized 4-digit reference numbering system, this pre-Grammar of Design classic laid the foundational architecture for all luxury Seiko automatics that followed.

The High-Grade 24-Jewel Caliber 394 (Seikomatic) Automatic Engine: Powering this historic instrument is the revered **24-jewel Caliber 394** (later designated within the 62 caliber family), an in-house automatic movement operating at a steady frequency of **18,000 vibrations per hour (vph)**. Equipping an automatic watch in **1963** with a lavish **24-jewel specification** minimized friction across critical gear-train pivots, utilizing Seiko's **Diashock** shock-protection system for exceptional daily resilience.

Architectural ""J13059"" Classic Dress Case and Hidden Crown Profile: Sourced in a solid stainless steel case, the reference **J13059** is celebrated for its sweeping, thick lugs with delicate polished chamfers. Featuring an ultra-slim bezel profile and the signature **recessed crown at 4 o'clock**, the case maintains a smooth, completely symmetrical silhouette on the wrist that slides effortlessly under a formal shirt cuff.

Immaculate Date-Only Dial Symmetry and Sunburst Radiance: The dial of the **J13059** is a masterclass in early-1960s visual restraint, showcasing a radiant silver sunburst canvas free from day-window clutter. It features **hand-applied, multifaceted rectangular block indices**—with a distinct double index at 12 o'clock—and sharp razor-edged dauphine hands. The date calendar window at 3 o'clock is neatly framed, proudly signed **""SEIKOMATIC""** and **""24 JEWELS""** in classic mid-century typography.

The Sovereign Engraved Case Back Crest Heritage: The hallmark of this 1963 treasure rests on the case back: the deeply engraved or embossed **Seiko Dolphin/Crown emblem**, certifying its factory-regulated precision and water-resistant case construction. As a rare pre-1964 transition reference, the J13059 24-jewel Seikomatic Self-Data stands as an essential, investment-grade cornerstone reference for serious vintage Seiko collectors worldwide.

For more information, please look at the pictures.

Notes

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