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Brand: | A. Lange & Söhne | 
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|---|---|---|---|
| Family: |
Unknown
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| Height: | 6.6 mm | ||
| Jewels: | 20 | ||
| Reserve: | 72 hours | ||
| Frequency: | 21,600 A/h | ||
| Winding: | Hand winding | ||
| Diameter: | 32.6 mm | ||
| © A. Lange & Söhne | Complications: | Hacking Seconds, Tourbillon | |
| Hands: | Central Hour Hand, Central Minute Hand, Open Heart at 6:00, Small Seconds Hand at 6:00 | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Hand-Winding  Tourbillon  Counter-Clockwise Balance Cock  Screwed Balance |
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| Production: – Current | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Cal. L102.1 is a hand-winding tourbillon movement from A. Lange & Söhne. It incorporates both hacking seconds and reset-to-zero functions, both highly unusual in a tourbillon watch.
- A. Lange & Söhne 1815 Tourbillon Handwerkskunst, Ref. 730
- A. Lange & Söhne 1815 Tourbillon, Ref. 730