let's see some of yours. here are/were some of mine:
movement held by a threaded sleeve
difficult id on the movement, but after much help, looks like gallet
next, an elgin that i sold. shouldn't have done it.
and lastly, an interesting 24 hour trench. this is not the case in which i found it. it came in a case with an integrated shrapnel guard. i kept it in this case while a silversmith fixed the hinge, yet, stupidly, never took a picture of the complete piece. it was absolutely lovely and it sold for a mint. shouldn't have done it.