Seiko UNIQUE 1950s S-Mark Wound Watch Rare Overhauled SA310

Key Features

Vintage 1950s SEIKO UNIQUE Wristwatch - Rare "S Mark" Dial, Hand-Wound, Silver Dial, 32mm Case

This vintage SEIKO wristwatch from the 1950s is a rare and historically significant model, known as "UNIQUE." Featuring the iconic "S mark" at 12 o'clock, symbolizing SEIKO's post-war revival, this watch is a cherished collector's piece. It is a successor to the famous "Super" and a bridge to SEIKO's golden era, leading to models like "Marvel." The watch exudes vintage warmth and classic elegance, with a beautifully aged silver dial showcasing a refined combination of Arabic numerals and wedge indices, characteristic of 1950s design.

Features:

  • Brand: SEIKO
  • Model: UNIQUE
  • Movement: Hand-wound (15 jewels)
  • Case Material: Stainless steel
  • Dial Color: Silver with vintage patina
  • Manufacturing: Japan
  • Year: 1950s
  • Vibrations: 18,000 bph (low-beat)
  • Size: Case width approximately 32mm (excluding crown), lug width approximately 16mm
  • Strap: Genuine SEIKO lizard-embossed leather strap with SEIKO engraved buckle
  • Condition: Fully serviced (OH completed). Keeps time with a daily variation of about -3 minutes, measured by Timegrapher. The case and crystal show minor scratches and wear consistent with age, but retain their original form with minimal polishing. The dial has developed a unique patina, adding to its vintage charm.

Additional notes:

  • The watch has been professionally overhauled and is in proper working order.
  • The "S mark" dial is a rare feature.
  • The watch features a classic 1950s Japanese vintage design.
  • Please note that minor scratches and aging marks are present, which add to its authentic vintage appeal.
  • Photos may not capture all imperfections;

Specifications

Brand SEIKO
Country Japan
Country/Region of Manufacture Japan
Style Versatile
Type wristwatch

Product Description

Description

This item is used.
Shipping from Osaka, Japan.

Watches are precision instruments.
Since each used watch varies in condition, please always feel free to ask questions about the condition of the watch before purchasing.
Please feel free to ask questions about the condition of the watch before you purchase it.

Offers are welcome as long as they are within the bounds of common sense!

For items above a certain price, we take measures against product switching returns and return fraud by photographing the serial number and documenting the packaging condition at the time of shipping through photos or videos.

Policy

  • For U.S. Buyers

    For shipments to the United States, all duties, taxes, and fees are already included in the shipping cost. You will not be charged anything extra upon delivery.

  • Duties and Taxes for Countries Outside the United States

    All countries except the United States: Import duties, taxes, and fees are not included in the item price or shipping cost. These charges are the buyer’s responsibility. They are usually collected by the shipping carrier or upon delivery. These fees are not the same as additional shipping charges..

  • Cancellations & Returns

    Cancellations or returns will only be accepted if there is an obvious problem not described in the item description or in messages with me. In such cases, please notify us within 3 days of receiving the item. Buyer is responsible for shipping charges and any costs related to returning the product.