The version shown here of a Junghans J80 with sweep second has no shock protection. The movement was equipped with a beautiful stripe, that normally was reserved to the "Meister" version.
Again, I find it difficult in some caliber allocation. With the above list I tried to provide some clarity on the different caliber and their designations.
The movements were produced at the same time with or without divided wheel bridge. There are versions with 7, 11, 13, 15, 16 and 17 jewels.
There's caliber Junghans J80 with various imprints on the bridge: J80S; J80M (was probably Meister).