Omega · Constellation
Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Moonshine Gold - Diamond / MOP Supernova / Alligator
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Constellation 131.58.29.20.55.003, seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 131.58.29.20.55.003?
The lug width of this model is 18mm. This parameter indicates the width of the case lug where the strap is attached. Always verify the measurement before purchasing an aftermarket strap to ensure perfect compatibility.
What strap material is recommended for the Constellation 131.58.29.20.55.003 in Moonshine Gold?
To enhance the luminosity of Moonshine Gold, we recommend vegetable-tanned leather in tobacco or champagne tones, pearl grey alligator, or écru calf with fine grain. Alligator creates maximum visual contrast, while vegetable-tanned calf offers the most natural aesthetic balance. Avoid dark colors that would diminish the characteristic finish of the case.
How do I change the strap on the Omega Constellation 131.58.29.20.55.003?
Use a spring bar tool to extract the spring bar from the case lugs. Insert the tool tip into the small lateral groove and apply light pressure until it detaches. Proceed carefully to avoid scratching the Moonshine Gold case. Once the old attachments are removed, insert the new strap and verify that the spring bar locks correctly.
Can I use an aftermarket 18mm strap on any watch with the same lug width?
Compatibility requires careful consideration: the 18mm lug width is the primary parameter, but the total strap length, thickness, and attachment type (standard spring bar or proprietary) must be verified case by case. For the 131.58.29.20.55.003, we recommend straps specifically dimensioned for this configuration. Casati Milano offers personalized consultation to guarantee a perfect fit.
How long does a leather strap last on a wristwatch like the Constellation?
A quality vegetable-tanned leather strap offers an average lifespan of 3-5 years with daily use, varying based on moisture exposure, perspiration, and cleaning frequency. Alligator, being more resistant, can reach 6-8 years. Casati Milano artisanal straps include an 18-month warranty and can be renewed through leather reconditioning or stitching replacement.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

