Vintage Seiko The Blackdiamond Collection Watch - Gold-Plated Concealed Dial (1999)
Lifetime authenticity guarantee
Serviced movement & 1 year warranty
International shipping
Photo taken on a 17.5 cm wrist
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Seiko The Blackdiamond Collection — The dial that plays hide-and-seek
This Seiko The Blackdiamond Collection vintage, reference 5P30-7030, produced around 1999, is a piece as original as it is elegant. Its fascinating hallmark: a concealed dial mechanism. Thanks to a rotating disc, you can choose to display either the complete gilded dial with Roman numerals, or a mysterious pared-back black dial where only the golden hands seem to float. Two watches in one, according to your mood.
With the dial revealed, the piece unveils an elegant gilded background adorned with black Roman numerals and the signature "The Blackdiamond Collection". With the dial concealed, the black disc creates a minimalist and contemporary "mystery" effect, where reading the time becomes almost enigmatic. This ingenious system is what gives this watch its singular character, unlike any other.
The round gold-plated case, with its finely guilloché bezel, is enhanced by faceted black stones set at the cardinal points — the "black diamonds" that give the collection its name. With its slim 6.4mm profile and 34mm diameter, this dress watch is worn with elegance and discretion. Powered by a reliable Seiko quartz movement (caliber 5P30), it combines originality, refinement, and practicality.
Mounted on a black leather strap that highlights the contrast with the gold of the case, this Seiko vintage watch in Unisex format will appeal to those seeking a singular piece, far from conventional watches. An authentic Japanese watch, selected and serviced by Atelier Victor. Fast and secure international shipping.
Three points to note about this piece
- Unique concealed dial mechanism: a rotating disc reveals or conceals the dial, transforming the watch at will (gilded dial or mysterious black dial).
- Guilloché gold-plated bezel set with faceted black stones: the "black diamonds" that give the collection its name.
- Slim dress format of 6.4mm and 34mm in diameter, Seiko quartz movement: an original and elegant piece, ideal for those who like to stand apart from the ordinary.
View our other Seiko vintage watches → | View all our vintage Japanese watches →
Technical specifications
- Brand: Seiko
- Model: The Blackdiamond Collection
- Reference: 5P30-7030
- Estimated year: 1999
- Origin: Japan
- Gender: Men's and women's watch (Unisex)
- Movement: Quartz, caliber Seiko 5P30
- Functions: Hours, minutes, seconds, dial concealment
- Case: Gold-plated (steel back)
- Bezel: Guilloché gold-plated, set with faceted black stones
- Dimensions: 34mm (34.5mm with crown)
- Lug to lug: 38mm
- Thickness: 6.4mm
- Lug width : 18mm
- Crown : Steel, original
- Dial : Gold with Roman numerals, with black mask, original
- Hands : Gold, original
- Crystal : Sapphire, excellent condition
- Bracelet : Black crocodile leather, non-original
- Buckle : Steel tang buckle, non-original
Condition and guarantee
- Overall condition : Very fine state of preservation. Original dial and mask mechanism in perfect working order, well-preserved gold-plated case. Light signs of wear consistent with its age.
- Water resistance : Not water-resistant (vintage watch)
- Authenticity : Lifetime guarantee
- Movement : Movement inspected, guaranteed for 1 year
- Included : Invoice Atelier Victor, protective case
- Not included : Original box and papers
Frequently asked questions
-
How does the masking dial work?
A rotating disc makes it possible to conceal or reveal the dial. In the revealed position, you can see the gold dial with Roman numerals; in the concealed position, a black disc covers the dial and only the gold hands remain visible, for a clean mysterious effect. It is a playful and original mechanism that gives this piece its full singularity. -
Are the stones on the bezel real black diamonds?
The faceted black stones set on the bezel are decorative elements (cut black stones) that give the collection its "Blackdiamond" name. They bring an elegant contrast to the gold of the case. This watch is appreciated for its original design and its mechanism, rather than for gemological value. -
Is this watch suitable for a man or a woman?
With its 34mm diameter and slim dress format, this Seiko Blackdiamond Collection is a Unisex piece. It suits both masculine and feminine wrists that appreciate original and elegant watches. -
Is the quartz movement reliable?
Yes, the Seiko 5P30 calibre has been inspected by our watchmaker and is guaranteed for 1 year. The battery can be easily replaced by any watchmaker. -
What is the international delivery time?
Dispatched within 48 hours, worldwide delivery in 3 to 5 days via DHL Express, insurance included.
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.
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.
We accept several payment methods:
- Bank card (Visa, Mastercard — American Express not accepted)
- Bank transfer (AED, EUR, USD)
- Cryptocurrency (USDT, USDC)
- PayPal
Other currencies accepted upon request. Exchange fees of approximately 3% may apply.
A 3% discount is granted for any payment by bank transfer starting from €1,000.
Does the strap not suit you? Add the strap of your choice to your order: we will fit it to your watch before shipment, at no fitting charge.
International Shipping
Shipped within 48 to 72 business hours by DHL Express or an equivalent carrier depending on the destination. Delivery in 2 to 6 business days. Each shipment is insured and delivered against signature.
- Free delivery from €1,000 of purchase, as well as on the Jewelry Atelier Victor
- 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
Pickup in Dubai
Hand delivery by appointment in Downtown, Dubai. Make an appointment.
Taxes and Customs
The shipping origin is indicated on each product sheet. If the delivery country differs from the shipping country, customs duties and taxes may apply upon receipt, at the buyer's expense. In exceptional situations, customs checks may extend the delivery time, regardless of our wishes and those of the carrier.
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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