De Bethune DB2005
High confidenceCorrected: an earlier revision of this record named a 'DB2115 family', which is not a designation the catalog could substantiate — De Bethune's published calibers include DB2005, DB2105, DB2109, DB2324, DB2507, DB2509 and DB2547, and inventing a plausible-looking number in that pattern is exactly the failure this catalog exists to avoid. The DB2005 is recorded here because its specification is documented in full. Its authentication value lies in the visible regulating organ: a titanium balance with white gold inserts beside a silicon escape wheel is unlike any conventional assembly and cannot be produced by decorating a generic movement.
Specifications
- Movement manufacturer
- De Bethune
- Frequency
- 28,800 vph (4 Hz)
- Jewels
- 27
- Power reserve
- 144 hours
- Diameter
- 30 mm
- Winding
- manual
- Complications
- Power reserve
Architecture
A manually wound caliber of 160 parts and 27 jewels, 30mm in diameter, running at 28,800 vph with a six-day power reserve from a self-regulating twin barrel. The regulating organ combines a titanium balance wheel with white gold inserts, a silicon escape wheel, and De Bethune's patented balance spring with a flat terminal curve.
Authentication notes
- MovementProbable
The balance is silicon with white-gold inserts, not glucydur
De Bethune's balance combines silicon with white gold weighting, and looks materially different from a conventional glucydur balance in both colour and construction. It is visible through the display back and it is a specification claim that can be checked by looking rather than by trusting.
Service practice
Manufacture work with no generic parts supply. Servicing runs through De Bethune, which is also why its records are a usable authentication resource at this volume.
References using this caliber
- De Bethune DB28Factory
DB28 · Whole production
- De Bethune DB25Factory
DB25 · Whole production
Provenance of this record
Sources & Evidence
De Bethune — collection and technical documentation
De Bethune SA
- Accessed
- 2026-08-19
Cited for
Last verified: Not yet reviewed