Carl F. Bucherer · Heritage

Strap for Heritage Bicompax Annual Hometown Edition Bern

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
Reference00.10803.08.92.93
FamilyHeritage
MovementCarl F. Bucherer caliber CFB 1972 hours, minutes, small seconds | annual calendar, big date, month | Chronograph
Year2022
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 Heritage 00.10803.08.92.93

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Heritage 00.10803.08.92.93, seen from the bench

The Carl F. Bucherer Heritage 00.10803.08.92.93 is a 41mm stainless steel timepiece from the Heritage collection, featuring an 18mm lug width. It houses the in-house CFB 1972 automatic caliber, operating at 28,800 vph with a 42-hour power reserve. The movement combines a mechanical chronograph, annual calendar with large date display, and month window. The case features polished and brushed surfaces with a transparent sapphire caseback revealing the decorated movement with guillochéd plates, Breguet spiral, and visible jewels. Both sides of the sapphire crystal are anti-reflective.

Frequently asked questions

What is the lug width of the Carl F. Bucherer Heritage 00.10803.08.92.93?

The lug width is precisely 18mm. This measurement refers to the distance between the spring bars that attach the strap to the case lugs. Measure from the inner edge of the lug to lug with a millimetre ruler to verify accuracy.

What strap is most suitable for the Carl F. Bucherer Heritage 00.10803.08.92.93?

Alligator in charcoal grey or dark brown is the finest solution for this collection: the characteristic grain complements the clean case geometry. For formal occasions, black alligator is irreproachable. For sporty contexts, NATO textile strap or gummed leather. Shell cordovan with vegetable tanning develops incomparable patina over time.

How do I change the strap on the Carl F. Bucherer Heritage 00.10803.08.92.93?

Use a dedicated spring bar removal tool. Position the watch on a soft surface, insert the tool into the lateral slot of the spring bar, press gently downward to release, remove the old strap. Insert the new strap by aligning the holes with the spring bars, then snap the spring bar into position. Verify that the strap is securely seated on both sides before wearing.

Are 18mm aftermarket straps compatible with the 00.10803.08.92.93?

Yes, all artisanal straps designed for 18mm lug width are fully compatible. Verify that the strap is manufactured for 18mm and that the case lugs do not feature proprietary design requiring specific adaptations. Milan Straps products are engineered for universal compatibility on this measurement.

What is the average lifespan of a leather strap for the 00.10803.08.92.93?

A quality leather strap with vegetable tanning has an average lifespan of 3-5 years with daily wear. Shell cordovan reaches 5-7 years. Alligator with traditional tanning lasts 4-6 years. Longevity depends on wear frequency, ambient humidity, direct sunlight exposure, and maintenance. Rotating multiple straps extends the life of each. Dry the strap after water contact and apply protective balm every 6-12 months.

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