Interesting. I didn't want to force anything but I did mess with both the top and bottom bearings trying to get them out and neither seemed to be made to come out. They moved freely in there though. Up and down a bit, and around n around.
I didn't remove those chrome rings on the top and bottom of the frame though - I don't know if those come off/screw off? They could've been holding the bearings in.

Headsets by Sheldon Brown.

More than you'll ever need to know.