Golana auto movement/case questions

Hello, I just picked up this Golana auto calendar in an 18k front loading case. I purchased it mainly for the 14k bracelet but would like to get it back in shape if possible. It was posted as having a damaged case and the crystal/frame assembly doesn't stay on and I'm wondering if anyone can describe to me the process of installing it so I can decide if it is salvageable or not. The other question is if you can possibly confirm the movement type as I would like to source hands if I can repair the case. As always, thank you for your help!