help on strange case / vintage Bulova

[east3rn]

Hello. I am working on a vintage Bulova from 60s.

I am trying to take apart the movement from the case but case is in somewhat strange structure.

As I tried to remove the caseback, I instead took apart the upper part. Then I removed the crystal and the dial to find the movement.

Here is a problem. I cannot find a way to remove the stem from the movement from the dial side. 

Please help.

[clockboy]

I would say it is split stem. Have you any idea what calibre it is. This site might help in identifying the watch.

https://www.watchophilia.com

[rogart63]

Must a split stem . You should be able to see it if you look down the crown tube . There is no other way to get that stem out or even in if there isn't a split stem on that. 

[east3rn]

Your advice was of great help. I pulled out the crown and the stem split in two.

Now I can look at the whole movement. Thank you for helping me out.