Moritz Grossmann · Atum

Strap for Atum Pure L DLC / Orange

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter41 mm
ReferenceMG-001119
FamilyAtum
MovementMoritz Grossmann caliber 201.1 hours, minutes, small seconds
Year2016
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Atum MG-001119

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Atum MG-001119, seen from the bench

The Atum represents one of Moritz Grossmann's propositions in the German high-watchmaking segment. The timepiece is powered by the Moritz Grossmann 201.1 caliber with hours, minutes and small seconds indication. The German manufacturer applies the traditional Glashütte techniques in the movement construction.

Frequently asked questions

What is the lug width of the Moritz Grossmann Atum MG-001119?

The lug width of the Moritz Grossmann Atum MG-001119 is precisely 18mm. This dimension is fixed and allows no tolerance: the strap must measure exactly 18mm in width at the attachment point with the case, measured from the inner shoulder of one lug to the other. If you measure from the outer edges of the lug holes, you will obtain a slightly higher figure, but the correct specification for purchasing an aftermarket strap is always 18mm.

What is the best strap for the Moritz Grossmann Atum MG-001119?

There is no single "best" strap in absolute terms, as the choice depends on intended use and personal aesthetic preference. For formal contexts, an alligator strap with vegetable tanning in dark brown or cognac tones is the most refined choice, as it amplifies the handcrafted character of the Saxon case. For daily versatility, a hazelnut-coloured calf leather offers elegance with greater practicality. For humid or sporting environments, an FKM rubber strap with grain texture is the ideal solution. The quality of strap construction is critical: the finest manufacturers guarantee lined lugs, reinforced passants, and impeccable interior finishes.

How do I change the strap on my Moritz Grossmann Atum MG-001119?

Strap replacement is accomplished via the spring bars (suspension pins) that connect the strap lugs to the case. Obtain a dedicated spring bar tool, insert the forked tip under the pin from the opposite side of the strap you intend to remove, and gently press upward to release tension. The pin will slide laterally and can be extracted. When inserting the new strap, ensure that the lugs are correctly aligned and press the pin until you hear a slight "click" indicating secure engagement. Never use improvised objects such as screwdrivers or scissors, as you risk damaging both the case and the strap.

Is an aftermarket strap compatible with the Moritz Grossmann Atum MG-001119?

Yes, any strap with an 18mm lug width is compatible with your MG-001119, provided the lugs are correctly dimensioned and the strap is constructed to acceptable quality standards. Quality aftermarket straps represent an opportunity to vary the aesthetic of your timepiece without compromise: specialist manufacturers provide alligator, calf, cotton, and rubber with interior finishes (suede lining, reinforced passants, hand stitching) that rival the standards of original straps. Compatibility is universal: only the quality of material and construction distinguishes an ordinary strap from an excellent one.

How long does a leather strap last on the Moritz Grossmann Atum MG-001119?

The lifespan of a leather strap depends on the quality of the leather, frequency of use, and maintenance practices. An alligator or calf leather strap made with vegetable tanning and artisanal construction can last 5–8 years under moderate daily use conditions. Natural leather wears through friction, moisture exposure, and oxidation: the points of greatest stress are at the attachment to the spring bars and at the keeper loop area. The patina that develops over time is desirable and testifies to authentic use. To extend service life, avoid prolonged water exposure (showering, swimming), protect the strap from direct heat sources, and consider annual maintenance with leather-specific conditioning products. An FKM rubber strap offers superior longevity, lasting 10–15 years, as rubber does not suffer from desiccation or biological degradation as natural leather does.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only