Montblanc
Star 107073— lug 19mm

The Montblanc Star 107073 features lugs of 19 millimetres. This measurement represents the internal distance between the two lug contact points on the case and determines strap compatibility. It is essential to verify this measurement before purchasing an aftermarket strap.

The ideal strap depends on intended use: for formal settings, we recommend black or cognac alligator with vegetable tanning, which develop noble patina over time. For daily versatility, vegetable-tanned calf leather represents the authentic artisanal choice. For practicality, a high-density cotton NATO in dark grey or black maintains restrained elegance. FKM rubber offers the modern solution for frequent strap changes.

The procedure requires specific tools: a spring bar tool or a small flat-head screwdriver. Gently insert the tool into the access hole beneath the lug, lift the spring bar, and slide out the old strap. Repeat on the opposite side. Position the new strap, compress the spring, and ensure it is completely engaged. If uncomfortable with the procedure, consult a professional watchmaker.

Yes, provided the strap lug width is 19 millimetres. Compatibility depends entirely on measurement: any strap with this width attaches perfectly. We recommend straps from specialised suppliers who guarantee material quality and finishes that harmonise with the satin stainless steel case of the 107073.

A quality artisanal calf leather strap with vegetable tanning typically lasts 5-7 years with moderate daily use, developing patina that enhances aesthetic character. Longevity depends on climate, humidity, and usage frequency. An alligator or shell cordovan strap is more robust and may last 8-10 years. Regular maintenance with appropriate products significantly extends strap lifespan.