Omega
Bespoke strap for Omega Speedmaster
Casati Milano builds bespoke straps for the Omega Speedmaster, from the earliest straight-lug cases to today's Moonwatch, in the atelier at Via XX Settembre in Milan or by video call wherever you are: the measurement read from the archive of your reference, the leather chosen together, four to five weeks of work, including care for the first eighteen months.
- 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 Omega Speedmaster 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 Speedmaster references one by one, from the CK2915 of the 1950s to the current ones: the lug width, the case, the years. Below is what the archive says today; from the reference, the rest follows. The watch stays on your wrist.
On vintage Speedmasters the reference is engraved inside the case back; on more recent ones it is stated on the warranty, with the serial number.
What changes for the strap
Nineteen millimetres on the straight-lug cases, twenty on the Professional, eighteen on the Reduced: one millimetre changes the strap. In any case, the strap takes the place of the bracelet and its end links, and the end follows the profile of the case between the two lugs. The archive states what size your reference has.
The leather
Box calf and suede for the everyday Moonwatch, shell cordovan for the straight-lug cases, alligator for the gold versions. Where it enters between the lugs the strap is as thin as needed; at the wrist it returns to its thickness. The calf lining, the edges painted in several layers, the hand stitching with saddle stitch.
The time
Four, five weeks from confirmation. In the atelier in Via XX Settembre or by 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
Four generations
The Speedmaster was born in 1957 with the CK2915: calibre 321, Broad Arrow hands, the tachymeter scale on the bezel rather than the dial. On 1 March 1965 NASA qualified it for flight; in July 1969 it was on the Moon, fastened to the suit by a long velcro strap in place of the bracelet. For collectors, each generation has its own case, its own lugs, its own bracelet. Below, as the atelier knows them.
The straight lugs
Since 1957 the Speedmaster has had a straight-lug case, with 19 millimetres between the lugs. It was with one of these, the 105.003, that NASA qualified it for flight on 1 March 1965.
The Professional with calibre 321
From 1964 the case is asymmetric, protecting the crown and pushers, and the word «Professional» appears on the dial: 42 millimetres, with 20 between the lugs.
The Moonwatch with calibre 861 and 1861
In 1968 calibre 861 takes the place of the 321; with the 3570.50 comes the 1861. The case remains 42 millimetres, with 20 between the lugs.
The Moonwatch today
Since January 2021 the Moonwatch has featured the calibre 3861 Master Chronometer, hand-wound, with Hesalite or sapphire crystal: 42-millimetre case, 20 mm lug width.
The other cases
Calibre 321
The 2020 Calibre 321 revisits the 105.003: 39.7-millimetre case, straight lugs, 19 mm lug width.
First Omega in Space
The First Omega in Space has a straight-lug case measuring 39.7 millimetres, with a 19 mm lug width: it was released in 2012 and returned in 2024.
Speedmaster ’57
The Speedmaster ’57 was released in 2013 with a case measuring 41.5 millimetres, and from 2022 with a case measuring 40.5, on a bracelet or leather strap: a 20 mm lug width.
Reduced
The Reduced, from 1988, is the automatic Speedmaster, with a bracelet starting at 18 millimetres at the case.
Speedmaster 38
The Speedmaster 38 is automatic and has 18 millimetres between the lugs.
Dark Side of the Moon
The Dark Side of the Moon, since 2013, has a black ceramic case measuring 44.25 millimetres and comes on a nylon fabric strap lined in leather.
Chronoscope
The Chronoscope, since 2021, has a 43 millimetre case, with 21 millimetres between the lugs.
Mark II
The Mark II, from 1969 with the calibre 861 and reintroduced in 2014, has a cushion case, with the lugs hidden beneath the case.