Seiko - Tank - Sans prix de réserve - Unisexe - 1990-1999

Seiko Vintage Tank Watch – Dialor or jaune? (Note: I should translate literally.)

An elegant vintage Seiko Tank wristwatch, featuring a refined gold-plated rectangular case, a beautiful champagne-gold dial and a classic black leather strap. With its sophisticated proportions, minimalist design and traditional rectangular silhouette, this timepiece reflects the timeless elegance of Japanese watchmaking and the enduring appeal of classic Tank-style watches.

The watch features an attractive champagne-gold dial with a subtle textured finish, slender applied gold-toned hour markers and elegant matching hands. Its clean, symmetrical layout creates a sophisticated appearance, emphasising simplicity, balance and understated luxury.
The rectangular case features distinctive stepped edges and gently angular corners, adding architectural character to the design. The polished gold-plated finish complements the warm tones of the dial, creating a harmonious monochromatic appearance.

A slender central seconds hand adds a practical detail without disturbing the minimalist composition.
Powered by a Japanese Seiko quartz movement, this watch combines elegant vintage styling with the convenience and precision of quartz technology. Its classic proportions make it suitable for both men and women, while the black leather strap provides an elegant contrast to the gold-toned case.
A charming vintage Seiko for collectors who appreciate refined rectangular watches, Japanese craftsmanship and timeless design.

Technical Details
- Brand: Seiko
- Model: Tank Quartz
- Reference: 5Y31-5A30
- Serial number: 913172
- Type: Vintage unisex wristwatch
- Period: 1990–1999
- Movement: Japanese Seiko quartz
- Calibre: 5Y31
- Case material: Gold plated
- Case dimensions: 33 × 25 mm
- Case shape: Rectangular, Tank-style
- Case back: Stainless steel
- Glass: Mineral crystal
- Dial: Champagne-gold dial
- Hour markers: Applied gold-toned baton indexes
- Hands: Gold-toned hands
- Functions: Hours, minutes, central seconds
- Strap: Black genuine leather
- Strap length: Approximately 21–22 cm
- Water resistance: Not tested for water resistance
- Box: Generic box included
- Condition: Grade B

Condition Report
This Seiko Tank Quartz wristwatch is presented in Grade B condition, showing signs of age and normal use consistent with its vintage character. The gold-plated rectangular case displays surface scratches, small marks and natural wear. Some localised wear to the gold-toned finish is visible, consistent with the age of the watch.
The champagne-gold dial retains its elegant appearance, with visible light ageing, small spots and minor surface imperfections. The applied gold-toned hour markers remain well defined, preserving the balanced design of the watch.

The gold-toned hands are clearly visible against the dial and show minor signs of ageing. The mineral crystal displays signs of normal use, including fine surface marks. The stainless steel case back shows scratches and handling marks. The engraved Seiko markings, reference number and serial number remain legible.
The black genuine leather strap is in good visual condition, with minor signs of use and handling. The watch is fitted with a Japanese Seiko quartz movement.
The watch has not been tested for water resistance; therefore, water resistance is not guaranteed.
Please study all photographs carefully, as they form an integral part of the description and show the actual condition of the item.

Story & Heritage
Seiko is one of the most influential names in the history of watchmaking, celebrated for its pioneering technology, precision engineering and distinctive Japanese design philosophy.
Founded in 1881 by Kintaro Hattori, the company evolved from a small watch and clock business in Tokyo into a globally recognised manufacturer of mechanical and quartz timepieces.

One of Seiko's greatest achievements came in 1969 with the introduction of the Seiko Quartz Astron, the world's first commercially available quartz wristwatch.
This innovation transformed the international watch industry, establishing new standards for precision, reliability and convenience.
During the following decades, Seiko developed a wide variety of quartz watches, combining advanced Japanese movements with designs inspired by both contemporary fashion and traditional watchmaking.
Among these designs, the rectangular Tank-style wristwatch has remained particularly admired.
The Tank silhouette, which became famous during the early twentieth century, represents one of the most enduring expressions of geometric elegance in watch design.
Its rectangular proportions, clean dial and refined appearance offer a sophisticated alternative to conventional round wristwatches.
This vintage Seiko captures that aesthetic beautifully. The champagne-gold dial, matching gold-plated case and slender applied hour markers create a harmonious composition that reflects the elegance of classic rectangular watchmaking.
Its understated design places emphasis on proportion and detail rather than unnecessary decoration.
The Japanese quartz movement adds a practical dimension, combining the refined appearance of a traditional wristwatch with the convenience of modern electronic timekeeping.
The combination of a warm gold-toned case and black leather strap gives the watch a timeless character, making it equally suitable for everyday wear and more formal occasions.

Today, vintage Seiko quartz watches are increasingly appreciated by collectors for their distinctive period designs, Japanese engineering and accessible horological heritage.
With its elegant gold dial, refined rectangular case and minimalist design, this Seiko Tank remains an attractive example of vintage Japanese watchmaking.
A sophisticated collectible piece for enthusiasts of Seiko, classic rectangular watches and timeless vintage accessories.
Internal Reference Number - VER-07