Vintage 1961 JAPAN SEIKO SEIKO LINER 15016E 21Jewels Hand-winding.

Vintage 1961 JAPAN SEIKO SEIKO LINER 15016E 21Jewels Hand-winding.

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

Item description

Movement :

• Pet name : SEIKO LINER .
• Caliber number : 3140.
• Movement : Hand-winding.
• Beat rate : 18000bph.
• Year of manufacture start : 1960's.
• Factory : Suwa.

Externals :

• Serial number : 1830984.
• Dial number : JAPAN LNJ15N300E.
• Glass : Acrylic.
• Case size : About 35mm.
• Lug width : 18mm.
• Band : New Leather Strap.

Condition :

• Used, it runs well.
• 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 Dawn of Ultra-Thin Japanese Horology (1961): Manufactured in **1961**—a historic milestone year preceding the Tokyo Olympics and predating Seiko's modern numbering systems—the **Seiko Liner** reference **15016E** represents Suwa Seikosha's groundbreaking achievement in ultra-thin dress watch design. Created to compete with elite ultra-flat Swiss timepieces, the Liner line established new records for slim manual-wind case profiles in post-war Japan.

The Ultra-Flat 21-Jewel Caliber 3140 (Liner) Engine: Powering this historic masterpiece is the celebrated **21-jewel Caliber 3140** (often designated simply as the Liner movement), operating at a classic frequency of **18,000 vibrations per hour (vph)**. Measuring an astounding **3.2mm in movement depth**, this hand-wound engine utilized an over-engineered **21-jewel specification** and Suwa's proprietary **Diashock** shock protection to achieve extreme slimness without compromising structural stability.

Architectural ""15016E"" Broad-Dressed Case Geometry: Sourced in a refined stainless steel case, the reference **15016E** features long, sweeping lugs with sharp polished chamfers and an ultra-narrow bezel profile. Designed to maximize dial diameter while minimizing wrist elevation, the case sits impossibly flush on the wrist, representing the pre-Grammar of Design peak of Japanese dress watch proportions.

Immaculate Time-Only Dial Purity and Sculpted Indices: The dial of the **15016E** is an exercise in early-1960s visual minimalism, featuring a radiant silver sunburst background completely uninterrupted by calendar windows. It showcases **hand-applied, multifaceted rectangular hour indices**—highlighted by an exquisite sculpted cross-cut index set at 12, 3, 6, and 9 o'clock—and razor-sharp dauphine hands, proudly signed in script typography with the classic **""Seiko Liner""** logo.

An Essential Pre-1964 Cornerstone of Suwa's Flat-Watch Heritage: Produced during the founding golden era of ultra-thin manual-wind development in **1961**, the 15016E 21-jewel Seiko Liner is a highly coveted, investment-grade cornerstone reference. It captures the vital historical bridge between early Seikomatic/Marvel eras and the thin dress aesthetics that eventually birthed Goldfeather and King Seiko.

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.