04 Prius Antenna socket photo w/antenna removed?

For a 2004 Prius, does anyone have a photo of what the antenna socket should look like after the antenna has been removed?

The antenna for my car rusted/broke off near the base of the socket, but it appears the threaded rod that was part of the bottom of the antenna is still in the socket.

I"m trying to figure out how to get it out without damaging the socket and antenna base itself.