Carl F. Bucherer · Heritage

Strap for Heritage Bicompax Annual Hometown Edition New York

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

Lug width20 mm
Case diameter41 mm
Reference00.10803.08.92.81
FamilyHeritage
MovementCarl F. Bucherer caliber CFB 1972 Hours, Minutes, Small Seconds | Annual Calendar, Big Date, Month | Chronograph
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 00.10803.08.92.81

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Heritage 00.10803.08.92.81, seen from the bench

The Carl F. Bucherer Heritage reference 00.10803.08.92.81 is equipped with the automatic caliber CFB 1972 with chronograph functions, annual calendar and big date. The watch features indications of hours, minutes and small seconds, with month display and chronograph complication. The in-house movement combines time measurement with advanced calendar indications.

Frequently asked questions

What is the lug width of the Carl F. Bucherer Heritage 00.10803.08.92.81?

The lug width of the Carl F. Bucherer Heritage 00.10803.08.92.81 is precisely 20mm, measured perpendicularly between the centre of the top lug and the centre of the bottom lug on the case. This dimension is critical for proper fitment of aftermarket straps: tolerances within 0.5mm will ensure accurate mechanical coupling without lateral flexion.

Which strap would you recommend for the Carl F. Bucherer Heritage 00.10803.08.92.81?

We recommend a premium alligator or calf leather strap to complement the refined steel case construction. Alligator, with its naturally textured relief pattern, engages elegantly with the geometric dial. Vegetable-tanned calf develops a fascinating patina over time. Alternatives include NATO straps in neutral tones for a sportier character, or rubber for high-humidity environments.

How do I change the strap on the Carl F. Bucherer Heritage 00.10803.08.92.81?

Remove the old strap using a dedicated spring bar tool: insert the tip into the lateral groove of the lug and gently push downward to release the internal spring. Once the lug is freed, the strap will slide away. Insert the new strap by sliding the lugs into the corresponding holes and press firmly until the retention click. Verify that the strap exhibits no lateral play.

Is a 20mm aftermarket strap compatible with the Carl F. Bucherer Heritage?

Yes, any strap with a 20mm lug width is fully compatible with the Carl F. Bucherer Heritage 00.10803.08.92.81. Premium aftermarket straps (leather, rubber, technical fabrics) maintain identical manufacturing tolerances as original straps. We recommend verifying the curvature of the case-to-strap transition: an excessively pronounced curve could generate micro-tensions during insertion.

How long does a leather strap last on the Carl F. Bucherer Heritage?

A premium leather strap (alligator or vegetable-tanned calf) has an average lifespan of 3-5 years with daily wear, varying by ambient humidity, sun exposure, and maintenance frequency. Rubber straps typically last 4-7 years. Vegetable-tanned leather aesthetically improves with age, developing a characteristic patina. We recommend periodically applying dedicated oils or protective creams for water repellency.

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