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Seiko Watch 2320-6640 Steel — Cushion Roman Dial (1981)


Selling price€1,05

Lifetime authenticity guarantee

Movement guaranteed for 1 year

Free insured shipping

Photo taken on a 17.5 cm wrist


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Seiko extra-thin steel: the small dress watch with cushion case and Roman dial

This Seiko watch is a dress watch in a delicate format, unisex provided the wrist is slender, worn equally well by a woman or a man. Its steel cushion case, square with very rounded corners, combines the softness of curves with the rigor of form. It measures 26mm (27.5mm with the crown) for a Lug-to-lug of 29.5mm and a thickness of only 6.3mm. A slim and discreet piece, in the purest tradition of the de ville watch.

The white lacquered dial is of absolute purity. Twelve black Roman numerals circle it, without the slightest superfluous ornament: nothing but the crisp contrast of black on white. The SEIKO and QUARTZ signatures occupy the center. Two slender blackened baton hands and a matching seconds hand sweep across the whole, in the purest spirit of the classic dress watch.

Inside beats the Seiko 2320 caliber, a dress quartz movement with three hands. Its slim construction allows the watch's 6.3mm profile. In practice, maintenance is limited to battery replacement by any watchmaker. The movement of this example was checked by our watchmaker and the battery replaced before shipping.

On the wrist, the piece plays the card of timeless classicism. The polished steel and white Roman dial create an ensemble of great clarity, highlighted here by a crocodile-style leather strap in black. This strap is not original; it is fitted with a Buckle pin buckle. The 14mm Lug width guides the choice of replacement straps toward narrow widths.

Three points to note

  • The cushion case, square with rounded corners, softens the silhouette while retaining a structured look: an elegant and timeless design.
  • The white dial with Roman numerals, entirely pared back, embodies the classicism of the dress watch: understated and perfectly legible.
  • At 6.3mm thick, it is a slim watch that slips under a shirt cuff without the slightest inconvenience.

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Technical specifications

  • Brand: Seiko
  • Model: Cushion dress watch, Roman dial
  • Reference: 2320-6640
  • Estimated year: 1981
  • Origin: Japan
  • Gender: Women's watch
  • Movement: Japanese quartz, Seiko 2320 caliber
  • Functions: Hours, minutes, seconds
  • Case: Steel (steel back), cushion shape
  • Dimensions: 26mm (27.5mm with the crown)
  • Lug to lug: 29.5mm
  • Thickness: 6.3mm
  • Lug width: 14mm
  • Crown: Steel, original
  • Dial: White lacquered, black Roman numerals, Seiko and Quartz signatures, original
  • Hands: Blackened batons (hours, minutes), slender seconds hand, original
  • Crystal: Mineral, very good condition
  • Strap: Black crocodile-style leather, not original
  • Buckle: Pin buckle, not original

Condition and warranty

  • General condition: Excellent state of preservation. Immaculate white dial, crisp numerals and hands, steel case in fine condition showing only light superficial signs of wear.
  • Water resistance: Not guaranteed (vintage watch)
  • Authenticity: Lifetime guarantee
  • Mechanical: Quartz movement checked, new battery, guaranteed for 1 year
  • Included: Invoice Atelier Victor, protective case
  • Not included: Original box and papers

Frequently asked questions

What is a "cushion" case?
The cushion case, or "cushion," is a square case with very rounded corners, evoking the shape of a cushion. It softens the strictness of the square while retaining a structured and elegant appearance. It is a classic watchmaking shape, neither entirely round nor entirely carrée, which gives this Seiko its timeless character.

Is the Seiko 2320 caliber reliable?
Yes. The 2320 is a three-hand dress quartz movement, renowned for its reliability. Its maintenance is remarkably simple: a battery change by any watchmaker is sufficient. The movement of this example has been checked by our watchmaker and is guaranteed for 1 year.

Is the case steel or plated?
The case is steel, a durable and resistant material that retains its luster over time. Unlike gold-plating, steel presents no risk of plating wear: it is a robust and understated choice, perfectly suited to a dress watch intended for daily wear.

Is this Seiko water-resistant?
No. Water resistance is never guaranteed on a vintage watch: the original gaskets have aged and the pressure of the caseback is no longer what it was on the first day. Avoid the shower, the pool, and the sea. On the other hand, simple contact with rainwater does not pose any difficulty.

What wrist is this watch suitable for?
With a 26mm case and a Lug-to-lug of 29.5mm, this is ideally a delicate piece, made for slender wrists. That said, a watch is also a matter of style: depending on tastes and the look sought, this piece can be worn equally well by a woman or by a man with a slender wrist who appreciates small dress watches. The size is only a guide, never a rule.

 

A piece selected by Atelier Victor

Authenticated, checked, and photographed by us. As all sales are final, our team remains available 7 days a week on WhatsApp to answer your questions, share additional photos or a video of the piece in hand — so that your choice can be made with complete peace of mind.

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