Seiko - Seikomatik-R - No reserve price - Seiko Gold Plated (SGP) - Unisex - 1966

Seiko - Seikomatic-R Diashock 30 Jewels Day-Date Dolphin Caseback - 8306-8001 - Men - 1966

Description

A fine example of mid-1960s Japanese horology: a Seiko Seikomatic-R automatic wristwatch, reference 8306-8001, featuring the iconic Dolphin mark embossed on the stainless steel caseback. Produced in 1966, this model houses a 30-jewel automatic movement with an English day-date complication.
Specifications

Brand: Seiko

Model: Seikomatic-R Diashock 30 Jewels

Reference Number: 8306-8001

Serial Number: 660**** (Dated to June 1966)

Movement: Automatic Winding, 30 Jewels (Caliber 8306)

Functions: Hours, minutes, sweep seconds, day display (English, non-quickset), date display (quickset via first crown position)

Case Material: Seiko Gold Plated (SGP) case with solid stainless steel screw-down caseback

Case Diameter: 37.5 mm (including crown)

Case Thickness: 10.8 mm

Lug Width: 18 mm

Strap: Brand new domestic synthetic leather strap (Crepha) with gold-tone buckle

Wrist Size: Fits approximately 15.0 cm to 18.5 cm

Condition Report

Movement & Operation: The watch is currently in working condition and runs. The date quick-set functions properly at the first crown pull. The second crown pull adjusts the hands smoothly. The day of the week changes naturally via 24-hour hand rotation (no quickset function on this caliber).

Dial & Hands: The silver sunburst dial remains in exceptionally good preserved state with crisp typography and clean applied markers. Hands show minor light patina consistent with age but maintain clear visibility.

Crystal: Acrylic crystal displays surface scratches and fine age cracks throughout upon close inspection.

Case & Bezel: The SGP (Seiko Gold Plated) finish shows signs of age, including typical plating wear along the lug edges and case sides, minor scratches, and light tarnish points.

Caseback: The screw-down stainless steel caseback clearly retains its original engraved Dolphin emblem alongside the reference and serial numbers.

Crown: Shows surface wear; original status.

Strap: Fitted with a brand-new, unworn Japanese aftermarket synthetic leather strap.

Important Notices for Buyers

Water Resistance: As with all vintage timepieces, water resistance is not guaranteed. Please keep this watch away from water, moisture, and high-humidity environments.

Maintenance: Vintage mechanical watches of this era are sold as-is and may require regular servicing, revision, or lubrication by a qualified watchmaker to ensure optimal long-term timekeeping accuracy and performance.

Please review all attached high-resolution photographs carefully, as they form an integral part of this description.