CORUM Automatic Artisan Classical Les Chevaliers de Montfort – Watch Movement Kit

CORUM Artisan Classical Les Chevaliers de Montfort Watch Movement Kit – CO 254 Caliber, Limited Edition 50 Pieces

Overview

This is a limited edition CORUM Artisan Classical Les Chevaliers de Montfort watch movement kit, based on the automatic Corum caliber CO 254. The CO 254 is a chronometer-certified movement developed by Corum, a Swiss watchmaker known for its high-horology complications and artisanal finishes. The Artisan Classical series, of which this movement is part, was introduced as a tribute to traditional watchmaking craftsmanship, with the Les Chevaliers de Montfort edition limited to 50 pieces worldwide.

The kit includes the CO 254 automatic movement, the original violet/blue dial, and the hands. The movement is confirmed to be in good working condition, with the kit graded Excellent in our Condition Grading Scale below. The dial features an applied 18k gold Corum logo at the 3 o’clock position, with no numerals or hour indexes, adhering to the minimalist aesthetic of the Artisan Classical collection. Complete watches from this series typically retail between US $15,000 and $20,000, making this kit a rare opportunity for restoration or servicing.

The absence of a stem in this kit means it is intended for professional watchmakers or collectors with access to compatible replacement parts. The movement will require servicing—including cleaning, oiling, and timing adjustments—to meet its original chronometer specifications. This kit does not include a case, crown, or additional components beyond those explicitly listed.

Specifications

The movement is the automatic Corum caliber CO 254, featuring 21 jewels and COSC chronometer certification. It displays hours, minutes, and central seconds. The CO 254 is based on a modified ETA 2892-A2 architecture, a movement family known for its reliability and thin profile, though Corum’s in-house adjustments and finishing distinguish it as a high-grade caliber. The balance frequency is 28,800 vph (4 Hz), with a power reserve of approximately 42 hours when fully wound.

The dial is violet/blue with a sunray finish, free of numerals or hour markers. The only applied element is the Corum logo at 3 o’clock, crafted in 18k gold. The hands are matching the original specification—likely heat-blued steel or gold-toned, depending on the reference variant—though the exact material is not documented in the available records. The movement is marked Corum | CO 254 | Chronometer | 21 Jewels | Switzerland on the rotor and mainplate. The dial bears no additional engravings beyond the logo.

The case dimensions for the original Les Chevaliers de Montfort model are 42mm in diameter, though this kit does not include a case. The movement diameter is 25.60mm (11.5”’), consistent with the ETA 2892-A2 base, with a height of 3.60mm. Lug width for the original model is 20mm, though this measurement is irrelevant to the movement kit itself.

Notes

• The article is sold “AS IS”. Please read our Warranty Policy before purchasing.
• Any parts not explicitly mentioned in this description or not visible in the accompanying photographs are not included.
• Colors may appear slightly different across various screens and devices so we cannot guarantee an exact screen-to-reality color match.

This kit represents one of 50 limited-edition movements from a series where complete watches command prices between US $15,000 and $20,000, offering a cost-effective path to restoring or servicing a rare Corum timepiece.