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Exact reference

A. Lange & Söhne LANGEMATIK PERPETUAL - 310.025 E

310.025 Historical / ownership-only

Licensed benchmark ownership-only historical identity

Case

Dimensions and fit

direct
Case length38.5 mm
Case width / diameter38.5 mm
Case thickness10.2 mm
Lug-to-lugNot recorded
Lug widthNot recorded
Water resistanceNot recorded

The dimension basis is not currently recorded.

Open dimension source ↗
Movement

Calibre and mechanism

Automatic
CalibreL922.1 Sax-O-Mat
Normalized calibreL9221SAXOMAT
GenerationNot recorded
Power reserveNot recorded
Open movement source ↗
Technical data

Conventional winding

Linked to sourced calibre programme
ApplicabilityRequired
DirectionBoth
TPD minimum500
TPD target500
TPD maximum500

Conventional winding fields are evidence-linked reference data. They are separate from any device-specific axial-control profile.

Open winding source ↗
Market context

Market-value disposition

Date not recorded

No exact-reference public market estimate has been admitted for this record.

Market observations are separate from manufacturer specifications and are not used to fill technical gaps.