You have to have each weapon that you carry on your permit? I'm glad I don't have to do it here. I as stationed in CA 76-80 and worked as a reserve officer in Atwater. We were given permits and we had to have each serial number on the permit in order to carry it. Back then I was lucky to be able to own just one weapon.
No serial since that is on your blue card that you also have to have on your person. And I don't think there is any limit of how many you can have. Someone said they've seen someone with 2 extension cards for all their guns.