|Diameter:||31 mm (14.5 ligne)|
|Complications:||2-Button, 6-Column Chronograph, Chronograph, Column Wheel 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|
Clockwise Balance Cock
|Production: 1942 – 1955|
Cal. 52 is a column wheel chronograph movement produced by Landeron in the 1940s and 1950s. It was a higher-end movement with 17 jewels and two chronograph pushers. Production is said to have started in 1942 and ended around 1955.Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.