Well, my 'case' (pun!) is slightly different:
I own a Seiko 7T36 (Age of Discovery) and need to get to the watch face as one of the eight (!) hands fell off.
Now this is desperate as I am no orologist, just a brave engineer.
Poor eyesight (-10dpt) is an advantage here, I have microscopic view, just no clue!
Before I have to give up on this marvel of engineering and auction the beauty off on the bay:
how to remove THIS movement from its gold case? The 7T36 has TWO stems and THREE push buttons...
I can open the back and do have the service manual which surprisingly does not mention the needed steps to get the movement out.
Thanks for any hint, eg. if to pull the crowns into specific positions, what levers to push, what to do with the button controls etc.
Now WHY the hour hand in the subdial fell off is an entirely different story...
Maybe the unique 7T36 is "too much watch" in one case?