I was looking something under the hood, when I realized that one horn was missng!
I can't imagine how or when this happened. The metal tab is broken, so it has to have fallen at some moment, but there seems to be no damage to the radiator. Strange.

I can't imagine how or when this happened. The metal tab is broken, so it has to have fallen at some moment, but there seems to be no damage to the radiator. Strange.