Actually the seller's comment was "Your inspector had a good catch; I really wish I had done an inspection when we bought the house a couple of years ago. I (seller) just looked around and thought it looked good but never though to look inside the electric panel"

Course their (seller's) agent already told me I am doing their inspection when they find their house to buy.

Also, it is actually bonded at the bottom of the panel, I didn't fit the whole panel in my original picture.