Tudor Black Bay Fifty-Eight Ref. M79030N
Dive Watch (Subcategory: Vintage-Inspired Heritage Diver) · Tudor (Owned by Rolex SA), positioned as a luxury-to-premium Swiss watchmaker renowned for exceptional value, robust tool watches, and rich historical ties to military and professional diving.
Period: Neo-Vintage / Modern Heritage (2018-Present), blending 1950s sub-aquatic tool watch aesthetics with modern manufacturing techniques.

Type
Dive Watch (Subcategory: Vintage-Inspired Heritage Diver)
Brand
Tudor (Owned by Rolex SA), positioned as a luxury-to-premium Swiss watchmaker renowned for exceptional value, robust tool watches, and rich historical ties to military and professional diving.
Movement
Automatic, Tudor In-House Calibre MT5402, beating at 28,800 vph (4 Hz), with a 70-hour power reserve, variable inertia balance, silicon balance spring, and chronometer certification by COSC.
Dimensions
Case diameter: 39mm, case thickness: 11.9mm, lug-to-lug distance: 47mm, lug width: 20mm. Wears slightly smaller and significantly thinner than standard Black Bay 41mm models, fitting vintage proportions exceptionally well.
Description
The Tudor Black Bay Fifty-Eight is widely celebrated as a masterclass in modern neo-vintage watch design. Drawing direct design cues from Tudor's historic Ref. 7922 from 1958, it scales down the chunky proportions of the standard Black Bay into a much more historically faithful 39mm case. The warm gilt accents, matte black dial, iconic snowflake hands, and rivet-style bracelet create an undeniable charm on the wrist, backed up by modern robustness and an impressive in-house chronometer movement.
Key Features
Proportional 39mm case inspired by 1958 dive watches, gilt dial printing, vintage-style aluminum bezel insert with red triangle, Tudor 'Snowflake' hands, rivet-style steel bracelet, and the COSC-certified in-house Calibre MT5402 with a 70-hour power reserve.
Dial Description
Black domed dial with gilt (gold-colored) chapter rings and printing, applied dot and geometric luminous hour indices surrounded by gold surrounds, signature Tudor 'Snowflake' hands with white lume, and four lines of gold text at the lower dial (660ft:200m, Chronometer, Officially Certified).
Case Material
Stainless steel (316L) featuring a combination of satin-brushed top surfaces and polished case flanks.
Crystal Type
Domed sapphire crystal with anti-reflective coating, offering the vintage warmth of acrylic with the modern scratch resistance of synthetic sapphire.
Bezel Details
Unidirectional rotating bezel in stainless steel with a matte black anodized aluminum insert, 60-minute graduation, silver-toned markers and numerals, and a striking red triangle pip at 12 o'clock.
Crown & Pushers
Screw-down winding crown in stainless steel adorned with the iconic embossed Tudor rose logo, featuring a prominent black tube collar and lacking crown guards for a pure vintage silhouette.
Bracelet or Strap
Riveted three-link stainless steel bracelet with satin-brushed finishing and visible rivet heads on the sides mimicking historical 1950s Tudor bracelets, secured by a folding clasp with safety catch.
Caseback Details
Solid, closed stainless steel screw-down case back with circular brushed finishing and peripheral engraving hallmarks, typical of robust tool watches of its lineage.
Movement Type
Automatic, Tudor In-House Calibre MT5402, beating at 28,800 vph (4 Hz), with a 70-hour power reserve, variable inertia balance, silicon balance spring, and chronometer certification by COSC.
Water Resistance
200 meters (660 feet / 20 ATM), suitable for swimming, snorkeling, recreational scuba diving, and water sports, though not rated for commercial saturation diving.
Origin & Provenance
Swiss Made, manufactured in Geneva, Switzerland, utilizing high-grade in-house mechanical movements developed by Kenissi for Tudor.
Age Estimate
Circa 2018-Present, as the Black Bay Fifty-Eight reference M79030N was first introduced at Baselworld in 2018.
Cultural Significance
The Black Bay Fifty-Eight spearheaded the industry-wide shift toward vintage-inspired proportions, proving that modern buyers crave smaller, historically accurate case sizes rather than oversized modern dimensions.
Condition Notes
Case and bracelet show standard light hairline scratches consistent with careful regular wear. The crystal appears clean and free of blemishes. The bezel insert, dial, and hands are pristine. Overall condition is Excellent.
Value Estimate
Retail price (MSRP) around $3,900 to $4,100 USD depending on configuration, with secondary market values generally holding strong between $3,000 and $3,700 USD depending on condition, box and papers completeness.
Care & Maintenance
Recommended professional service interval every 5 to 10 years for the in-house automatic movement. Ensure the crown is fully screwed down before water exposure. Wash the steel bracelet periodically with mild soap and warm water.
Similar Watches
Rolex Submariner Ref. 5508 (historical inspiration), Tudor Black Bay 41 (larger alternative), Omega Seamaster 300 Master Co-Axial (competing vintage-styled luxury diver), Oris Divers Sixty-Five (affordable alternative).
Interesting Facts
The 'Fifty-Eight' moniker directly references the year 1958, which marked the release of Tudor's first 200-meter water-resistant dive watch, the Ref. 7922 (often called the 'Big Crown'). The watch has become a massive commercial success and a darling among horological enthusiasts.