Watch reference library
Tudor Black Bay Fifty-Eight 925 79010SG
In production 2021 to present.
Specifications
- Case size
- 39mm, 12.7mm thick, 47mm lug to lug
- Case material
- 925 silver, satin finished
- Bezel
- Unidirectional rotating, with a taupe anodized aluminum insert
- Dial
- Domed taupe, with rhodium-plated snowflake hands and applied indexes filled with Super-LumiNova
- Movement
- Tudor manufacture calibre MT5400, automatic, COSC-certified
- Power reserve
- About 70 hours
- Water resistance
- 200 meters
- Crystal
- Sapphire with anti-reflective coating, and an open sapphire caseback
- Bracelet
- Brown grain leather strap (M79010SG-0001) or taupe fabric strap with a silver band (M79010SG-0002), both with a 925 silver buckle
The story
Tudor launched the Black Bay Fifty-Eight in 2018 as a smaller, 39mm, vintage-inspired take on its Black Bay dive watch. At Watches & Wonders in April 2021 it added two new case materials, yellow gold and silver.
The silver watch is the Black Bay Fifty-Eight 925, reference 79010SG. The 925 refers to sterling silver, which is 92.5 percent silver by weight. Tudor says it is the first time the brand has used 925 silver for a diver's watch, and it keeps the composition of the alloy secret. The brand also says the properties of the alloy mean use does not affect the appearance of the case. This was also the first Black Bay Fifty-Eight with an open caseback showing the MT5400 movement, and it kept the 200-meter water resistance.
The press was curious about the choice. Worn & Wound called a silver Black Bay 58 borderline inexplicable at first but quite beautiful, and noted that people would ask whether silver is soft for a dive watch. Time+Tide wondered how well silver would hold up in daily wear.
What to check before you buy
The case is sterling silver, and Tudor says the alloy was chosen so that use does not affect its appearance. Because the writers who reviewed the watch at launch wondered how silver would wear on a dive watch, look closely at the case, lugs and crown for knocks and scratches on any example you consider. The reference tells you the strap it came on: M79010SG-0001 is the brown leather strap and M79010SG-0002 is the taupe fabric strap with a silver band, and both are sold with a 925 silver buckle.
This is a different watch from the steel Black Bay Fifty-Eight 79030N, with a taupe dial and a taupe aluminum bezel insert in place of black. It also has an open caseback, which the steel watch did not have when this model launched. Time+Tide noted that the exhibition caseback adds less than a millimeter of thickness while the watch keeps its 200-meter rating.
Buying or selling a 79010SG?
Moda is always buying. Text photos to (605) 521-2821 for a fast offer, or start on the Moda Watches page. For any deal with a stranger, Moda's middleman service inspects the watch before money changes hands.
Common questions
Is the Black Bay 58 925 really made of solid silver?
Yes. Tudor makes the case from 925 silver, which is sterling silver, 92.5 percent silver by weight, and the 925 silver is also used for the crown and buckle. Tudor does not disclose the exact alloy.
What movement is in the 79010SG?
Tudor's manufacture calibre MT5400, an automatic with a power reserve of about 70 hours, COSC certification and a silicon balance spring.
Does the Black Bay 58 925 have a see-through caseback?
Yes. It was the first Black Bay Fifty-Eight with an open caseback, which shows the MT5400 movement, and it keeps the 200-meter water resistance.
What is the difference between M79010SG-0001 and M79010SG-0002?
The strap. The 0001 comes on a brown grain leather strap and the 0002 on a taupe fabric strap with a silver band. Both have a 925 silver buckle.
When did Tudor introduce the Black Bay 58 925?
At Watches & Wonders in April 2021, alongside a yellow gold Black Bay Fifty-Eight.
Related references
Sources
The facts on this page come from the brand and from established watch publications.