|Diameter:||31.8 mm (14 ligne)|
|Cal. 54||Complications:||2-Button, Cam Switching Chronograph, 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
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).Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.