The photos I have are not very good but they are what is available at the moment.
I believe what we are looking at is the back of the internal ball, but with all of the back compartments missing. You can see a few parts inside on the bottom of the Corliss.
This Corliss is in the basement of an old 1890s bank building. It was dropped through the floor so is unlikely to ever come out again.
Assuming all of the back is really missing, this will be a long term restoration looking for parts or making replacements, possibly using 3D printing.
If you can help in any way, please feel free to contact me.

