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Only 1 available
Shipping from Dubai — taxes and customs duties are the buyer's responsibility outside the UAE
Lifetime authenticity guarantee
Movement guaranteed for 1 year
Free insured shipping
Photo taken on a 17.5 cm wrist
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Atelier Note
A steel rectangle with cut corners, 5.5mm thick, a white dial with a light grain, and on the back a Japanese engraving dated August 1985. A Seiko from 1984, delivered with its Atelier Victor invoice serving as a certificate.
A 1984 Seiko Tank 9021-5180, steel with cut corners and engraved caseback
This Seiko 9021-5180 dates from 1984. Its rectangular steel case, with cut corners and a stepped bezel, measures 27.5mm wide, 36mm lug-to-lug and 5.5mm thick: an extra-thin watch profile that slips under a cuff.
The white dial, with a grained finish, features thin baton markers, doubled at 12 o'clock, and a dotted minute track. Two dark baton hands indicate the hours and minutes, and a thin silver-tone centre seconds hand sweeps across the dial. The Seiko Quartz signature is placed below 12 o'clock.
The caseback bears an engraving in Japanese, dated August 1985: a presentation inscription indicating a watch given for twenty-five years of service within a Japanese company. The watch is powered by the Seiko 9021 quartz calibre, made in Japan; the original steel crown sits on the right side.
It is fitted with a handmade black crocodile leather strap, fastened by a steel pin buckle, on an 18mm lug width.
Three points to note
01
Japanese-engraved caseback — A presentation inscription dated August 1985.
02
5.5mm thick — An extra-thin steel rectangle with cut corners.
03
Grained white dial — Fine markers and a silver-tone centre seconds hand.
Why choose a vintage Seiko Tank watch?
This Seiko Tank 9021-5180 combines a 5.5mm steel case with cut corners, a grained white dial and a caseback that retains the trace of its presentation, in August 1985. A dress watch that can be worn every day as well as with a shirt.
Each piece offered by Atelier Victor is checked by our watchmakers before being listed online: movement tested, case and dial examined. It is delivered with the Atelier Victor invoice serving as a certificate, a 1-year mechanical guarantee on the movement and a lifetime guarantee of authenticity.
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Technical specifications
- Brand : Seiko
- Model : Tank steel with cut corners, white dial
- Reference : 9021-5180
- Estimated year: 1984
- Serial number: 4101••
- Origin: Japan
- Gender: Men's watch, women's watch (Unisex)
- Movement: Quartz, calibre Seiko 9021 (Japan)
- Functions: Hours, minutes, centre seconds
- Case: Steel (engraved steel caseback), rectangular shape with cut corners
- Width: 27.5mm (29.5mm including the crown)
- Lug-to-lug: 36mm
- Thickness: 5.5mm
- Lug width: 18mm
- Crown: Steel, original
- Dial: White grained, baton markers, original
- Hands: Baton, silver-tone centre seconds, original
- Crystal: Mineral (condition 9/10)
- Strap: Black crocodile leather, handmade, not original
- Buckle: Steel pin buckle, not original
Condition and guarantee
- Overall condition: Very good overall condition, original dial and hands, engraved caseback, Crystal 9/10
- Water resistance: Not guaranteed (vintage watch)
- Authenticity: Lifetime guarantee
- Mechanics: Movement checked and functional, 1-year guarantee
- Included: Atelier Victor invoice serving as a certificate of authenticity, protective case
- Not included: Original box and papers
Frequently asked questions
Why is it referred to as a Tank watch?
The term is commonly used to refer to a watch with a rectangular case. Seiko did not market this reference under that name: it is its shape that earned it, a steel rectangle with cut corners.
What does the caseback engraving say?
It is written in Japanese and dated August 1985. It indicates a gift for twenty-five years of service, in the name of a Japanese company: in Japan, offering an engraved watch to reward a long career was common practice.
How is this watch dated?
By its serial number, engraved on the caseback, 4101••. At Seiko, the first digit gives the year within the decade, here 4, and the second the month, here 1: the piece dates from January 1984, before it was presented in August 1985.
Is this piece suitable for a slim or larger wrist?
At 27.5mm wide, 36mm Lug-to-lug, and 5.5mm thick, it suits wrists of around 15 to 18cm — a guide, never a rule: everyone wears what they like. It slips under a cuff.
How do delivery and payment work?
The piece is shipped with tracking and insurance by a trusted carrier, to a collection point or home delivery depending on the destination. Delivery is free.
Mechanical warranty — 1 year
Each watch is inspected by our watchmakers before shipping. In case of a mechanism malfunction during the first year, we cover the repair.
Authenticity warranty — lifetime
If a watch turns out to be non-authentic, we will take it back and refund you in full. Without time limit.
What is not covered
- Exposure to water or humidity
- Shocks, impacts, or vibrations
- Consumable parts (strap, Crystal, crown, pushers)
- Battery replacement (quartz movements)
- Opening or disassembly of the watch by a third party
- Improper use
The accuracy of vintage watches varies according to the model, movement, and year of production. A request for accuracy improvement deemed within acceptable tolerances cannot be covered by the warranty.
Shipping fees
After-sales service is free. Shipping fees outside the United Arab Emirates remain the responsibility of the customer.
Authentication Process
Each watch is examined by our partner watchmakers before being offered for sale: verification of authenticity, checking the conformity of the components, identification of any modification or replacement of original parts.
If any element has been replaced during the life of the watch (dial, hands, crown, Crystal, strap), we systematically indicate it in the product sheet. You buy knowing the exact history of your piece.
Certificate of Authenticity
Your Atelier Victor invoice serves as a certificate of authenticity: it attests to the origin and conformity of the piece, and is covered by our lifetime authenticity guarantee — if a piece sold by Atelier Victor were found to be non-authentic, it would be fully refunded, with no time limit.
Free delivery
Delivery is free on all our pieces internationally. Dispatch within 48 to 72 business hours by DHL Express, Emirates Post, EMS or an equivalent carrier depending on the destination, delivery within 2 to 14 business days. Each shipment is insured and delivered against signature.
- Tracking number sent as soon as the shipment is dispatched
- For certain destinations, delivery may be made to a secure collection point in order to guarantee the integrity of the shipment
Collection in Dubai
In-person handover by appointment in Downtown Dubai. Make an appointment.
Taxes and customs
The shipping origin is indicated on each product page. If the delivery country differs from the shipping country, customs duties and taxes may apply upon receipt and are payable by the buyer. Customs inspections may in rare cases extend the delivery time.
For full details, please consult our shipping policy.
FINAL SALES
All sales are final: no return, exchange, or cancellation is accepted after order confirmation. Each piece is authenticated, inspected, and described in detail before being offered for sale.
BEFORE PURCHASE
Our advisors remain at your disposal for any questions and can send you additional photographs or videos upon simple request, by email or on WhatsApp.
NON-CONFORMING ITEM
In the exceptional case of an item that does not match its listing, please notify us within 72 hours: it will be eligible for a refund or an exchange. If the parcel shows damage upon delivery, it should be refused or its opening filmed continuously.
For full details, please consult our return policy.
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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