TUDOR "Black Bay Fifty-Eight GMT" Watch in Stainless Steel
TUDOR “Black Bay Fifty-Eight GMT” watch, model 7939G1A0NRU, in stainless steel, from 2026. It features a round case measuring 39 mm in diameter and 12.8 mm in thickness, as well as a black dial protected by Sapphire crystal and featuring the iconic “Snowflake” hands. Powered by a Tudor in-house mechanical self-winding movement, caliber MT5450-U, featuring 27 Rubies, a frequency of 28,800 vibrations per hour, and offering a 65-hour power reserve, it features a GMT function that displays a second time zone. Water-resistant to 200 meters, it features a rotating bezel and a stainless steel case.
In excellent overall condition, this watch comes with its original Tudor box and papers (Full Set 2026). It is covered by Tudor’s five-year international Warranty, valid through 2031.
A quick note: Tudor officially lists 34 Rubies—not 27—for the MT5450-U caliber. The date function is also present, with a date window at the 3 o’clock position.
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Delivery
- Free delivery in France
- Shipping within 24/48 hours in France and up to 5 days internationally
- Shipping costs and methods are available here.
- Secure delivery and hand-delivery
- Insured delivery up to the value of the jewelry
- Discreet and unmarked package
Returns
- Return shipping costs are free.
- You have 14 working days from the receipt of your order to make a return.
Expertise
The jewelry and watches sold on Castafiore are certified and authenticated either by our in-house watchmaking and jewelry experts or by one of our professional partners.
The digital certificate of authenticity is sent by email between 15 and 20 days after the order, once the legal withdrawal period has expired. The digital certificate of authenticity is issued and signed by our Castafiore experts, with a unique reference number, ensuring traceability and authenticity.
Payments
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Available payment methods:
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- Pay in 3 or 4 installments (for orders between €500 and €4,000)
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With 20 years at Cartier for Charlotte Rey and 25 years at Hôtel Drouot for Anne Borde , their unparalleled expertise allows them to unearth vintage and pre-owned jewelry treasures. Their discerning eye guides you to the authenticated piece of jewelry of your dreams, at a fair price.
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