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Brand: | Landeron | 
|
|---|---|---|---|
| Family: | |||
| Height: | 6.22 mm | ||
| Jewels: | 17 | ||
| Reserve: | hours | ||
| Frequency: | 18,000 A/h | ||
| Winding: | Hand winding | ||
| Diameter: | 31.8 mm (14 ligne) | ||
| Cal. 54 | Complications: | 2-Button, Cam Switching Chronograph, Chronograph, Horizontal Clutch Chronograph | |
| Hands: | 30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00 | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Hand-Winding  Clockwise Balance Cock  Screwed Balance  Indexed Regulator |
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| Production: – | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Cal. 54 is a 14 ligne variant of the 13.75 ligne Cal. 48 an early dual-pusher cam-operated chronograph movement. The added width was modest (less than 1 mm). Unlike other movements in the family it uses traditional horizontal clutch rather than an oscillating pinion to activate the chronograph function.
