Mystery solved
About a year ago, I posted here about what were those round
things on Perry's balcony. They looked like door handles or speakers.
No one seemed to have a clear idea. The other day while watching the
Irate Inventor a guy sneaks into Perry's office from the balcony. You
can see that those round things are just ornate concrete round shapes
holding up the balcony railing. Now I can sleep at night.