Every quartz watch has a jumping second, so the second hand always moves in whole second increments. This is in contrast to the mechanical watch, where the oscillation frequency of the balance determines how many small steps the hand takes between two second strokes. In classic movements, it’s 18,000 bph (beats per hour), which results in five steps per second; in the more modern 28,800 bph of an ETA 2824-2, it’s eight. This is called sweeping second.
Jumping second (repeats after 15 seconds, otherwise the file will be too big…)
Little is known about Crettiez, a French manufacturer of movements and watches. And the little that is known, unfortunately, has a sad background. But let’s start with the story from the beginning.
Today, there will not be a complete walk through the functioning of a movement, but a specific focus on the bidirectional winding automatic of a Citizen 6000.
An inconspicuous ladies’ watch that holds a little surprise after opening the cover: an interesting plate whose inscription almost has the character of a novel – and a movement with Duplex escapement!
Catalogs for identifying watch movements exist from about 1930 on. The oldest catalog I know of is from Ebauches SA in 1928. But how can you identify even older movements?
Malleray Model Nr. 6, 1909
