Help identifiying this movement

[engarom]

Hello all,
I need help to ID this movement.
It is in a PAM 029 and I cant get the crown back in. Any ideas of how to get it in and working?
Any and all comments are welcome

 

[daytonaz]

i've this movment in a rolex explorer2 GMTworking,
and I had the same problem with the crown, you need a lot of patience! and to block the tree charge in its position: (