Vintage 1967's JAPAN SEIKO SEIKOMATIC-P WEEKDATER 5106-7000 33Jewels Automatic.

Vintage 1967 JAPAN SEIKO SEIKOMATIC-P WEEKDATER 5106-7000 33Jewels Automatic.

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

Item description

Movement :

• Pet name : 51 SEIKOMATIC-P WEEKDATER .
• Caliber number : 5106A.
• Movement : Automatic.
• Beat rate : 19800bph.
• Year of manufacture start : 1967's.
• Factory : Kameido.

Externals :

• Serial number : 7602773.
• Dial number : JAPAN 5106-7000T AD.
• Glass : Acrylic.
• Case size : About 34.1mm.
• Lug width : 18mm.
• Band : New Leather Strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set the day of the week : English only.
  Set the date: Iteration the hour hand at 8:00 to 12:00.
  Set of the date: Press 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 Apex of 1967 Kameido Executive Luxury (1967): Manufactured in **1967**—a landmark historical year defined by Japan's rapid post-war economic modernization and horological expansion—the **Seiko Seikomatic-P (Presmatic)** represented Daini Seikosha's ultimate automatic flagship before the line transitioned into the Presmatic and King Seiko series. Sourced under reference **5106-7000**, this luxury executive model sat at the very top of Kameido's automatic collection, delivering high-grade mechanical finishing and cutting-edge user functionality.

The Over-Engineered 33-Jewel Caliber 5106 Automatic Heart: Powering this historic instrument is the magnificent **33-jewel Caliber 5106A**, an in-house automatic engine operating at a steady frequency of **19,800 vibrations per hour (vph)**. Equipping an executive watch in **1967** with an ultra-high **33-jewel specification** was a supreme statement of micro-engineering luxury. Utilizing synthetic rubies across gear-train pivots to minimize mechanical friction, it features **hacking seconds**, hand-winding capability, and exceptional chronometric stability.

Revolutionary Hexagonal Crown Push-Button Quick-Set Date Mechanism: A defining technological triumph of the 51-series movement was its iconic **crown-center push button**. By depressing the center button integrated inside the unique **hexagonal crown**, the wearer could instantly advance the date calendar with sharp, tactile feedback. This clever engineering eliminated the need for secondary case pushers while preserving sleek, water-resistant case lines and seamless executive operation.

Architectural ""7000"" Dress Case Geometry and Faceted Contours: The reference **5106-7000** is globally distinguished among vintage collectors for its classic, broad-shouldered stainless steel case architecture. Featuring sharp, multifaceted lugs and sweeping polished bevels inspired by Taro Tanaka's early **""Grammar of Design""** guidelines, the low center-of-gravity case sits completely flush against the wrist, sliding effortlessly under a tailored shirt cuff.

Masterful ""Weekdater"" Dial Harmony and Dual-Calendar Clarity: The dial of the **5106-7000** is a study in late-1960s visual balance, showcasing a radiant silver sunburst canvas decorated with **hand-applied, multifaceted rectangular block indices** and razor-sharp hands. Symmetrically framed at 3 o'clock, the dual-calendar window houses a **bilingual day disk** alongside the quick-set date configuration, proudly signed with **""SEIKOMATIC-P""** and **""33 JEWELS""** typography alongside the Daini lightning bolt emblem above 6 o'clock.

For more information, please look at the pictures.

Notes

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