A. Lange & Söhne Lange 1 Moon Phase
Movement
Manually wound
Size
38.5 mm

Overview

The Lange 1 Moon Phase in a 38.5 mm case

The A. Lange & Söhne Lange 1 Moon Phase, reference 109.021, in an 18-carat yellow gold case, 38.5 mm across and 10.4 mm high, with an ivory argenté dial. Manually wound calibre L901.5 with outsize date, power-reserve indicator and moon-phase display, on a middle brown alligator leather strap with a yellow gold prong buckle.

A. Lange & Söhne no longer makes this reference. The distance between the lugs is 20 mm.

The movement is calibre L901.5, manually wound, with 398 parts and a reserve of 72 hours; the balance beats at 21,600 semi-oscillations an hour (3.0 Hz). Lange lists the outsize date, the power-reserve indicator and the moon-phase display as its functions. The case is 10.4 mm high, water resistant to 3 bar, with a sapphire glass case back. The strap is alligator leather, closed with a prong buckle in the case metal.

Key details

Case material18-carat yellow gold
MovementL901.5, manually wound
CollectionLange 1

Calibre L901.5

  • Manually wound
  • Outsize date, power-reserve indicator and moon-phase display
  • 398 parts
  • 21,600 semi-oscillations per hour (3.0 Hz)
  • Power reserve 72 hours

The reference

Technical specifications

Lange 1 Moon Phase
Reference109.021
CollectionLange 1
CalibreL901.5
MovementManually wound
FunctionsOutsize date, power-reserve indicator, moon-phase display
Power reserve72 hours
Frequency21,600 semi-oscillations per hour (3.0 Hz)
Movement parts398
Case dimensions38.5 mm
Case height10.4 mm
Case material18-carat yellow gold
Case backSapphire glass
Water resistance3 bar
DialIvory argenté
StrapMiddle brown alligator leather
Clasp18-carat yellow gold prong buckle
Distance between lugs20 mm
StatusDiscontinued — A. Lange & Söhne no longer makes this reference

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Lange 1 Moon Phase · Ref. 109.021

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