- Movement
- Manually wound
- Size
- 41 mm
Overview
The Grand Lange 1 Moon Phase in a 41 mm case
The A. Lange & Söhne Grand Lange 1 Moon Phase, reference 139.021, in an 18-carat yellow gold case, 41 mm across and 9.5 mm high, with an argenté/yellow dial. Manually wound calibre L095.3 with outsize date, power-reserve indicator and moon-phase display, on a middle brown alligator leather strap with a yellow gold prong buckle.
This execution is in 18-carat yellow gold. The dial is argenté/yellow, which Lange describes as ivory argenté-coloured and crafted from solid silver, and the strap is middle brown alligator leather with a yellow gold prong buckle.
Lange says the Grand Lange 1 Moon Phase is built around its moon-phase display. The brand explains that the display sits inside the circle of the hour and minute indications, which leaves room to show the moon and a starry sky at large scale.
The movement is calibre L095.3, manually wound, with 446 parts and a reserve of 72 hours; the balance beats at 21,600 semi-oscillations an hour (3.0 Hz). Lange lists three functions: the outsize date, the power-reserve indicator and the moon-phase display. The case is 9.5 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
Design and engineering
- DialAn argenté/yellow dial, ivory argenté-coloured in Lange’s description and crafted from solid silver.
- Moon-phase displayLange places it within the hour and minute circle, which gives the moon and the starry sky room to be shown large.
- Outsize date and power reserveBoth are listed functions of calibre L095.3; the manually wound movement stores 72 hours.
- Case18-carat yellow gold, 41 mm across and 9.5 mm high, with a sapphire glass case back and water resistance of 3 bar.
- Strap and buckleMiddle brown alligator leather, closed with an 18-carat yellow gold prong buckle.
Calibre L095.3
- Manually wound
- Outsize date, power-reserve indicator and moon-phase display
- 446 parts
- 21,600 semi-oscillations per hour (3.0 Hz)
- Power reserve 72 hours
The reference
Technical specifications
| Reference | 139.021 |
|---|---|
| Collection | Lange 1 |
| Calibre | L095.3 |
| Movement | Manually wound |
| Functions | Outsize date, power-reserve indicator, moon-phase display |
| Power reserve | 72 hours |
| Frequency | 21,600 semi-oscillations per hour (3.0 Hz) |
| Movement parts | 446 |
| Case dimensions | 41 mm |
| Case height | 9.5 mm |
| Case material | 18-carat yellow gold |
| Case back | Sapphire glass |
| Water resistance | 3 bar |
| Dial | Argenté/yellow |
| Strap | Middle brown alligator leather |
| Clasp | 18-carat yellow gold prong buckle |
| Distance between lugs | 20 mm |
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