Tudor
Bespoke strap for Tudor Black Bay
Casati Milano builds bespoke straps for the Tudor Black Bay, from the first model with the burgundy bezel to the GMT and today's smaller cases, in the atelier at Via XX Settembre in Milan or by video call wherever you are: the size read from the archive for your reference, the leather chosen together, four to five weeks of work, care for the first eighteen months included.
- By appointment only
- In the atelier in Milan or by video call
- Four to five weeks
- Eighteen months of care
References in the archive

Your Tudor Black Bay with the leathers of the atelier


Matte Louisiana alligator leather
Anthracite
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Real photographs of the atelier’s leathers. No generated images.
The size
We do not ask you for it. The atelier's archive knows the Black Bay references one by one: the lug width, the case, the years. Below is what the archive says today; from the reference, everything else follows. The watch stays on your wrist.
What changes for the strap
The end of the strap follows the profile of the case between the two lugs. What size your reference takes is stated by the archive.
The leather
Alligator, box calf, suede, shell cordovan: the leather is chosen together, in the atelier or via video call. Where it fits between the lugs the strap is as thin as it needs to be; at the wrist it returns to its full thickness. The calf lining, the edges painted in several layers, the hand saddle stitching.
The time
Four, five weeks from confirmation. In the atelier on Via XX Settembre or via video call, wherever you are. Care for the first eighteen months is included.
The next step
The right strap is not chosen. It is built together.
In the atelier in Via XX Settembre or by video call, wherever you are.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
Seven models
The Black Bay was born in 2012 with reference 79220R: a 41 mm case, ETA 2824 calibre, burgundy bezel and Snowflake hands. In 2016 the in-house MT5602 calibre arrived; in 2018 the Black Bay Fifty-Eight brought the case down to 39 mm.
Black Bay 79220R
The first Black Bay, from 2012, has a 41 mm case, the ETA 2824 calibre and 22 mm lug width; it comes on a steel bracelet or on aged leather, always with a second fabric strap.
Black Bay 79230
From 2016 the 41 mm Black Bay carries the in-house MT5602 calibre and receives the riveted bracelet; the lug width remains 22 mm.
Black Bay 58
In 2018 the Black Bay 58 reduces the case to 39 mm with the MT5402 calibre: the lug width drops to 20 millimetres.
Black Bay GMT
The 2018 Black Bay GMT has a 41 mm case, the MT5652 calibre with a second time zone and 22 mm lug width.
Black Bay Pro
The 2022 Black Bay Pro unites the 39 mm case with the GMT's MT5652 calibre: 20 mm between the lugs.
Black Bay 54
The Black Bay 54 has a 37 mm case, the MT5400 calibre, and 20 mm between the lugs; the steel bracelet has three links, with a T-fit clasp.
Black Bay Master Chronometer
The Black Bay with the MT5602-U calibre keeps the 41 mm case and comes with two steel bracelets, either three or five links, both with a T-fit clasp.