|Diameter:||32.60 mm (14 ligne)|
|Complications:||2-Button, 6-Column Chronograph, Chronograph, Column Wheel Chronograph|
|Production: 1936 – 1950|
Valjoux Cal. 84 is a column wheel chronograph movement. It features a six-column wheel controlling the chronograph function and has two pushers and a 30 minute chronograph register. It was exclusively produced for Bovet Frères for their “Mono Rattrapante” between about 1936 and 1950.