TIMEHUNTER
Omega Calibre

1861

Classic Moonwatch chronograph calibre derived from the Lemania 1873 architecture.

Technical Profile

Architecture and specifications

Movement typeManual chronograph
Frequency21,600 vph
Power reserve48 h
Jewels18
ComplicationsChronograph
ArchitectureManufacture
Reliability profileProven
Service accessSpecialist
TimeHunter Analysis

Collector context

Classic Moonwatch chronograph calibre derived from the Lemania 1873 architecture. Evaluate the complete watch rather than the calibre in isolation: condition, regulation, service history and correct parts materially affect ownership quality.

A famous calibre can add historical interest, but maintenance condition remains more important than reputation alone.
Related Calibres

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Co-Axial Master Chronometer evolution of the Moonwatch movement.

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Compact Master Chronometer calibre widely used in modern Seamaster models.

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8900

Twin-barrel Master Chronometer with independently adjustable hour hand.

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Watch Glossary