Charles Hahn & Cie. produced the 14.5 ligne Cal. 39 family in the 1930s through the 1960s. It is unusual in that it contains both the column wheel Cal. 39, Cal. 42, and Cal. 52 as well as the cam-operated Cal. 53. It was a mid-market movement, unlike the higher-end column wheel chronographs produced by Landeron at this time, and similar to the cam-operated Cal. 48 family.