Technical Archive

Moritz Grossmann
Benu MG-001173— lug 18mm

Moritz Grossmann Benu MG-001173: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Benu Tourbillon Skylife

Artisanal Note

"This model requires a precise 18mm lug width to preserve the original sartorial balance."

Technical Specifications

Moritz Grossmann MG-001173
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

MG-001173

Movement

Moritz Grossmann caliber 103.0 Hours, Minutes, Small Seconds | Tourbillon Escapement

The Heritage

The Moritz Grossmann Benu MG-001173 is a white gold wristwatch with 44.50mm case diameter and 18mm lug width, representing the revival of German watchmaking from Glashütte in the 21st century. Powered by the Moritz Grossmann caliber 103.0 movement, it features a tourbillon escapement, manual decoration techniques, and proprietary Grossmann spiral, all recovered from 19th-century construction methods. The 18-carat white gold case combines architectural proportions with essential geometry, designed for high-end watch collectors.

FAQ

What is the lug width of the Moritz Grossmann Benu MG-001173?

The lug width of the Moritz Grossmann Benu MG-001173 is 18mm. This measurement represents the distance between the internal shoulders of the spring bar and must be measured with millimetre precision using a digital calliper. The 18mm width allows you to select from a wide range of aftermarket straps without compromising on quality or availability.

Which strap is most suitable for the Benu MG-001173 in white gold?

For the Benu MG-001173 in white gold, the ideal strap is black or dark brown alligator, which creates an elegant contrast with the cold luminosity of the metal. Alternatively, a vegetable-tanned calf leather in cognac brown offers versatility and develops a rich patina over time. Heavy-weight NATO textile or FKM rubber straps remain excellent options for sport or professional use.

How do you change the strap on a watch with 18mm lugs?

To change the strap, you will need a spring bar tool. Position the watch with the caseback facing upwards, insert the flat tip of the spring bar tool beneath the lateral spring, push gently to release the pin and slide off the old strap. Insert the new strap by aligning the holes with the lug pins, then press the spring until you hear a click. Verify that the strap is securely fastened before wearing the watch.

Is the Moritz Grossmann Benu MG-001173 compatible with aftermarket straps?

Yes, the Benu MG-001173 is fully compatible with 18mm aftermarket straps. The standardisation of lug width allows you to select from a vast range of straps in alligator, calf leather, shell cordovan, technical textile and rubber. We recommend always verifying that the strap features thickness and structural rigidity consistent with the case proportions to maintain overall visual balance.

What is the average lifespan of a quality leather strap for this watch?

A quality leather strap (alligator or vegetable-tanned calf) subject to moderate daily use has an average lifespan of 3–5 years. Factors such as ambient humidity, direct sun exposure, frequency of use and maintenance care (periodic cleaning, treatment with natural wax) significantly influence longevity. Vegetable-tanned leather tends to age better than industrial methods, developing a fascinating patina. FKM rubber straps have equivalent or superior lifespan with minimal maintenance.