Tudor Black Bay Fifty-Eight 925: A New Diver Made Entirely Of Sterling Silver

By Montredo in News
April 8, 2021
Tudor Black Bay Fifty-Eight 925: A New Diver Made Entirely Of Sterling Silver

When Tudor introduced its first Black Bay Fifty-Eight (Ref. 79030N) back in March 2018, Tudor and diving watch fans alike leaped for joy. Not only was the case diameter reduced to 39mm, but also a new manufacture calibre called the MT5402 made its debut. The result was a vintage-inspired diver’s watch that not only cost half as much as a Submariner, but also cut a fine figure on narrower wrists thanks to its new, flatter design. Due to the resounding success and the great response, Tudor only launched the Black Bay Fifty-Eight Navy Blue in 2020.

It was foreseeable that Tudor would follow up with another BB58 version in due course. With the brand new Black Bay 925, however, the Rolex sister has broken new ground in many respects and presented one of the coolest and most unexpected Watches and Wonders 2021 novelties.

Tudor Black Bay Fifty-Eight 925
After black and blue now comes taupe.

From stainless steel to sterling silver

While the first two Black Bay Fifty-Eights were made of stainless steel, Tudor now decided to take a more unconventional approach with the Fifty-Eight 925. Instead of the usual 316L stainless steel, Tudor makes use of 925 sterling silver, an alloy of 92.5% silver and 7.5% other metals (such as copper). Although the usage of silver in the watch industry is not a novelty per se, quite the opposite in fact, the material is hardly to be found nowadays and has gone somewhat out of fashion.

Tudor Black Bay Fifty-Eight 925
The watch comes either on a leather or a Julien Faure textile strap.

A display case back for the MT5400

In addition to the use of 925 silver, it is the first time ever that Tudor has given a Black Bay a sapphire case back – at least when speaking about non-limited watches. Strictly speaking, the Black Bay Ceramic One (Ref. M7921/001CN), a custom-made ceramic for the Only Watch charity event, already featured a sapphire crystal case back, but let’s not be too nitpicky here.

The Caliber MT5400 through the exhibition case back.

Even though the case proportions of the completely satin-finished watch remain unchanged, Tudor uses the Kenissi calibre MT5400 (instead of the MT5402 of previous BB58 iterations) here for the first time. Of course, this boasts the same high standard of quality that you would expect from the Tudor brand and a watch in this price range: In addition to COSC chronometer certification, the watches are regulated to -2 to +4 seconds a day, which actually exceeds the COSC guidelines of -4 to +6 seconds.

The power reserve is also ample at 70 hours. As a result, you could theoretically take off the watch on Friday evening and put it back on again on Monday morning without having to wind it. Then again, whether you really want to take off your Black Bay Fifty-Eight 925 for an entire weekend is probably up for debate.

At a glance:

  • References: M79010SG-0001, M79010SG-0002
  • Case diameter: 39mm
  • Case material: 925 sterling silver
  • Strap: Leather or textile
  • Winding: Automatic
  • Caliber: MT5400 (COSC)
  • Power reserve: 70h
  • Water resistance: 200m
  • MSRP: CHF 4,100
Taupe describes a color blend with properties of brown and gray.


The watch can be pre-ordered from us as of now. If you are interested, simply drop our customer service team a quick line, we look forward to hearing from you.