GRAND LANGE 1 MOON PHASE
in 18-carat yellow gold
Reference 139.021
Price upon request
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Flagship exclusive timepieces are only available in our A. Lange & Söhne flagship boutiques around the world.
This watch is fully focused on its eponymous complication. The position of the moon-phase display in the hour and minute circle allows the large-format depiction of the moon and the starry sky. The model version in yellow gold features an ivory argenté-coloured dial crafted from solid silver.

TECHNICAL DETAILS
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Case dimensionCase diameter: 41 mm
Case thickness: 9.5 mmWinding mechanismManually wound movementPower reserve72 hoursComplicationsOutsize date, moon-phase display, power-reserve indicator -
Reference139.021 / LSLS1391AADial colourArgenté/yellow
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Case material18-carat yellow gold
Case back: sapphire glassCase dimensionCase diameter: 41 mm
Case thickness: 9.5 mmWater resistance3 bar -
Movement designationL095.3Number of movement parts446Winding mechanismManually wound movementPower reserve72 hoursComplicationsOutsize date, moon-phase display, power-reserve indicator
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StrapMiddle-brown, Alligator leatherOur alligator straps fully comply with the CITES regulations: Species – alligator mississippiensis. Extraction method – farmed. CITES Appendix – Appendix IIBuckle18-carat yellow goldDistance between lugs20 mm
GRAND LANGE 1 MOON PHASE
99.998 PER CENT PRECISION
The accurate calculation of the so-called lunation is one of the most complex issues of general lunar theory.

THE LANGE 1 FAMILY
THE LEGEND AMONG LANGE TIMEPIECES
The LANGE 1 is the result of a bold new beginning. It combines tradition and innovation and is regarded as the epitome of Lange watchmaking artistry.
HOW CAN WE BE OF SERVICE?
Whether you are in search of a specific model, have questions out of interest or need a service request for your timepiece – we are delighted to help you. We are at your service by phone, email or in one of our boutiques.

COMPLIMENTARY DELIVERY
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PERSONAL INTRODUCTION
Individual guidance on how to set and care for your timepiece