Gerald Charles · Maestro

Strap for Maestro Anniversary Full-Pavé

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

Lug width20 mm
Case diameter39 mm
ReferenceGC19-00ZZ
FamilyMaestro
MovementGerald Charles caliber GCA 131-9391 hours, minutes, seconds | big date
Year2020
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 Maestro GC19-00ZZ

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Maestro GC19-00ZZ, seen from the bench

The Gerald Charles Maestro reference GC19-00ZZ is equipped with the proprietary GCA 131-9391 caliber, displaying hours, minutes, seconds and a large date. The movement features a modular architecture with the big date function positioned at 12 o'clock. The construction follows the canons of Swiss haute horlogerie with manual finishes on the movement components.

Frequently asked questions

What is the lug width of the Gerald Charles Maestro GC19-00ZZ?

The lug width of the Gerald Charles Maestro GC19-00ZZ is 20mm. This dimension is measured between the two attachment pins that connect the strap to the case. It is essential to verify this measurement before purchasing an aftermarket strap to ensure perfect compatibility.

Which strap do you recommend for the Gerald Charles Maestro GC19-00ZZ?

For the Maestro GC19-00ZZ we recommend straps in alligator with vegetable tanning for timeless elegance, calf leather for versatility, or cotton NATO for practicality. The choice depends on usage: formal with leather, casual with NATO, sporty with rubber. All options in 20mm maintain the original case proportions.

How do I change the strap on my Gerald Charles Maestro GC19-00ZZ?

The process requires a spring bar tool: insert the curved tip under the attachment pin, gently lift until the internal spring is freed, remove the old strap. Position the new strap aligning the holes, press the pin until it clicks into place. Repeat on the other side. If you lack experience, consult an expert to avoid damage.

Can I use an aftermarket compatible strap on my Gerald Charles Maestro GC19-00ZZ?

Yes, any strap with a 20mm lug width is compatible. Milano Straps offers a selection of artisanal straps in leather, NATO, and rubber specifically tested to guarantee optimal fit and stability. Always verify that the lug width is exactly 20mm to avoid play or incompatibility.

How long does a leather strap last on the Gerald Charles Maestro GC19-00ZZ?

A quality leather strap with vegetable tanning lasts 3-5 years with daily wear, or longer if used occasionally. African alligator is more durable and can exceed 7 years. Longevity depends on environment, perspiration, and maintenance. Natural patina develops over time, increasing character. Periodic replacements keep your watch looking pristine.

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