Once in a while you can find pictures of Junghans pocket watches where chatons have been used on the movement. This seems to be all done as an improvment after delivery as there is no indication that these chatons have been used during the production. Junghans itself did this to make special event watches as single peaces like the one which was presented to Arthur Junghans for hisconfirmation in 1917.
Another J15 movement with chatons in the Junghans museum.
Junghans movements have been used as well duringjourneyman's andmaster craftsmanexamination where theexaminee had to show his skills.
This is Wolfgang's "Wolfri" journeyman's examination piece from 1961.
Pictures of Junghans movements with chatons found in the www.