Jaeger-LeCoultre · Master Grande Tradition

Strap for Master Grande Tradition Tourbillon Céleste Mother-of-Pearl Aventurine

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm

20 mm straps All Jaeger-LeCoultre

Lug width20 mm

Case diameter42 mm

Reference5073403 (aka: Q5073403)

FamilyMaster Grande Tradition

MovementJaeger-LeCoultre caliber 946 hours, minutes, Additional 24 hours Hand (fixed) | month | sky chart | tourbillon escapement

Year2016

CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Master Grande Tradition 5073403 (aka: Q5073403)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Master Grande Tradition 5073403 (aka: Q5073403), seen from the bench

The Jaeger-LeCoultre Master Grande Tradition 5073403 is a masterpiece from the Master Grande Tradition collection, featuring the in-house Caliber 946 movement. The 42mm white gold case houses a celestial chart, perpetual calendar, moonphase indicator, and tourbillon regulator, delivering complex astronomical complications. The 20mm lug width accommodates compatible straps while maintaining precise proportions.

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