 |
Brand: | Landeron | 
|
|---|---|---|---|
| Family: |
Unknown
|
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| Height: | |||
| Jewels: | 17 | ||
| Reserve: | hours | ||
| Frequency: | 18,000 A/h | ||
| Winding: | Hand winding | ||
| Diameter: | 29.4 mm (13 ligne) | ||
| Complications: | 5-Column Chronograph, Chronograph, Column Wheel Chronograph, Monopusher Chronograph | ||
| Hands: | 30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 6:00 | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Hand-Winding  Clockwise Balance Cock  Screwed Balance  Indexed Regulator  5-Column Chronograph |
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| Production: – | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Cal. 13 is a column wheel monopusher chronograph produced by Landeron in the 1940s.
Dr. Ranfft suggests that it is “like 11, but stronger main spring”. Given that Cal. 11 has a six column wheel, it is likely that it is a two-pusher unlike Cal. 13. Images of this movement and Heuer watches that used it support the notion that it is a two-pusher movement.
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.