Movement record · Switzerland

Doxa 11½''' hand-wound family

Partially verified

Representative of the many small-to-mid Swiss brand calibres of the mid-century period; Doxa is better documented for its later dive watches, but its hand-wound production was typical of the industry.

Technical specifications

Diameter: Approx. 25.6 mm (11½ lignes)
Height: Approx. 4–5 mm class
Jewels: 15–17 jewels depending on version
Frequency: 18,000 vph
Power reserve: Approx. 40 hours (period figures vary)
Winding: Hand-wound
Setting: Stem setting
Escapement: Swiss lever
Balance: Monometallic
Complications: None

Identification features

Doxa signature on the bridge or plate
Period case and dial combinations

Known variants

Jewel-count grades
Shock-protected later versions

Servicing notes

Cleaning, lubrication, mainspring and pivot work belong with a qualified watchmaker working from calibre-specific documentation. Conserve original parts: replacing a worn component with a modern substitute changes the object, and refinishing plates or dials destroys evidence.

General guidance only. Antique movements should be serviced by a qualified watchmaker.

Historical significance

Records of 'ordinary' brand calibres like this fill the gap between famous flagship movements and anonymous ébauches — the bulk of what collectors actually encounter.

Diagram

Schematic: plate and bridge layout. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

Sources & references

de Carle, D., Watch and Clock Encyclopedia
Period trade material catalogues and calibre reference compilations (edition-dependent)
Published manufacturer technical documentation where available

Where sources disagree, the disagreement is stated rather than resolved silently.